MAX4582EUE-T中文资料

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MAX4512EPE+中文资料

General DescriptionThe MAX4511/MAX4512/MAX4513 are quad, single-pole/single-throw (SPST), fault-protected analog switch-es. They are pin-compatible with the industry-standard nonprotected DG201/DG202/DG213. These new switch-es feature fault-protected inputs and Rail-to-Rail ®signal handling capability. The normally open (NO_) and normally closed (NC_) terminals are protected from overvoltage faults up to 36V during power-up or power-down. During a fault condition, the NO_ or NC_terminal becomes an open circuit and only nanoamperes of leakage current flow from the source, but the switch output (COM_) furnishes up to 10mA of the appropriate polarity supply voltage to the load. This ensures unam-biguous rail-to-rail outputs when a fault begins and ends.On-resistance is 175Ωmax and is matched between switches to 10Ωmax. The off-leakage current is only 0.5nA at +25°C and 10nA at +85°C.The MAX4511 has four normally closed switches. The MAX4512 has four normally open switches. The MAX4513 has two normally closed and two normally open switches.These CMOS switches can operate with dual power supplies ranging from ±4.5V to ±18V or a single supply between +9V and +36V.All digital inputs have +0.8V and +2.4V logic thresh-olds, ensuring both TTL- and CMOS-logic compatibility when using ±15V or a single +12V supply.ApplicationsFeatureso ±40V Fault Protection with Power Off±36V Fault Protection with ±15V Supplies o All Switches Off with Power Off o Rail-to-Rail Signal Handlingo Output Clamped to Appropriate Supply Voltage During Fault Condition; No Transition Glitch o 175Ωmax Signal Paths with ±15V Supplies o No Power-Supply Sequencing Required o ±4.5V to ±18V Dual Supplies +9V to +36V Single Supply o Low Power Consumption, <2mWo Four Separately Controlled SPST Switches o Pin-Compatible with Industry-StandardDG411/DG412/DG413, DG201/DG202/DG213o TTL- and CMOS-Compatible Logic Inputs with Single +9V to +15V or ±15V SuppliesFor free samples & the latest literature: , or phone 1-800-998-8800.For small orders, phone 408-737-7600 ext. 3468.MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches________________________________________________________________Maxim Integrated Products119-4760; Rev 1; 8/02Ordering Information continued at end of data sheet.*Contact factory for dice specifications.Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.Ordering InformationPin Configurations/Functional Diagrams/Truth TablesATE Equipment Data Acquisition Industrial and Process-Control SystemsAvionicsRedundant/Backup SystemsM A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, GND = 0V, T A =T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Note 1:COM_ and IN_ pins are not fault protected. Signals on COM_ or IN_ exceeding V+ or V- are clamped by internal diodes.Limit forward diode current to maximum current rating.Note 2:NC_ and NO_ pins are fault protected. Signals on NC_ or NO_ exceeding -36V to +36V may damage the device. Theselimits apply with power applied to V+ or V-, or ±40V with V+ = V- = 0.(Voltages Referenced to GND)V+........................................................................-0.3V to +44.0V V-.........................................................................-44.0V to +0.3V V+ to V-................................................................-0.3V to +44.0V COM_, IN_ (Note 1)..............................(V- - 0.3V) to (V+ + 0.3V)NC_, NO_ (Note 2)..................................(V+ - 36V) to (V- + 36V)NC_, NO_ to COM_.................................................-36V to +36V Continuous Current into Any Terminal..............................±30mA Peak Current into Any Terminal(pulsed at 1ms, 10% duty cycle)...................................±50mAContinuous Power Dissipation (T A = +70°C) (Note 2)Plastic DIP (derate 10.53mW/°C above +70°C)...........842mW Narrow SO (derate 8.70mW/°C above +70°C).............696mW TSSOP (derate 9.4mW/°C above +70°C)..................754.7mW CERDIP (derate 10.00mW/°C above +70°C)................800mW Operating Temperature RangesMAX451_C_ E......................................................0°C to +70°C MAX451_E_ E...................................................-40°C to +85°C MAX451_MJE .................................................-55°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = +15V, V- = -15V, GND = 0V, T A =T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)(V+ = +15V, V- = -15V, GND = 0V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS—Single +12V Supply(V+ = +10.8V to +13.2V, V- = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 6_______________________________________________________________________________________Note 1:COM_ and IN_ pins are not fault protected. Signals on COM_ or IN_ exceeding V+ or V- are clamped by internal diodes.Limit forward diode current to maximum current rating.Note 2:NC_ and NO_ pins are fault protected. Signals on NC_ or NO_ exceeding -36V to +36V may damage the device. These limits apply with power applied to V+ or V-, or ±40V with V+ = V- = 0.Note 3:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.Note 4:∆R ON = ∆R ON(MAX)- ∆R ON(MIN).Note 5:Leakage parameters are 100% tested at maximum rated hot temperature and guaranteed by correlation at T A = +25°C.Note 6:Guaranteed by design.Note 7:Off isolation = 20 log10 [ V COM_/ (V NC_or V NO_) ], V COM_= output, V NC_or V NO_= input to off switch.Note 8:Between any two switches.Note 9:Leakage testing for single-supply operation is guaranteed by testing with dual supplies.ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)(V+ = +10.8V to +13.2V, V- = 0, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches_______________________________________________________________________________________7__________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)010050250200150300350-20-50-15-105101520SWITCH ON-RESISTANCE vs. V COM (DUAL SUPPLIES)V COM (V)S W I T C H O N -R E S I S T A N C E (Ω)80602040160140100120180200-15-50-1051015SWITCH ON-RESISTANCE vs. V COM AND TEMPERATURE (DUAL SUPPLIES)V COM (V)S W I T C H O N -R E S I S T A N C E (Ω)100010051015202530SWITCH ON-RESISTANCE vs. V COM (SINGLE SUPPLY)V COM (V)S W I T C H O N -R E S I S I T A N C E (Ω)050200150100300350250400046281012SWITCH ON-RESISTANCE vs. V COM AND TEMPERATURE (SINGLE SUPPLY)V COM (V)S W I T C H O N -R E S I S T A N C E (Ω)0300200100700800600500400900100005101520ON AND OFF TIMES vs. SUPPLY VOLTAGESUPPLY VOLTAGE (±V)t O N , t O F F (n s )1p10p100p1n10n 100n-50-25255075100125150I D(ON), I S(OFF), AND I D(OFF) LEAKAGES vs. TEMPERATURETEMPERATURE (°C)L E A K A G E (A )02810641214-15-10-5051015CHARGE INJECTION vs. V COM (DUAL SUPPLIES)V COM (V)Q (p C )010*******500400600-5025-255075100125ON AND OFF TIMES vs. TEMPERATURETEMPERATURE (°C)t O N , t O F F (n s )100300200500400600-50025-255075100125POWER-SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )M A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 8_______________________________________________________________________________________00.51.51.02.52.03.001015520253035LOGIC-LEVEL THRESHOLD vs. V+M A X 4511-10V+ (V)L O G I C -L E V E L T H R E S H O L D (V )Typical Operating Characteristics (continued)(T A = +25°C, unless otherwise noted.)0-10-20-1200.010.11101001000FREQUENCY RESPONSE-90-100-110FREQUENCY (MHz)L O S S (d B )P H A S E (D E G R E E S )-70-80-50-60-30-4012010080-120-60-80-100-20-402006040Pin Description*As long as the voltage on NO_ or NC_ does not exceed V+ or V-, NO_ (or NC_) and COM_ pins are identical and interchange-able. Either may be considered as an input or output; signals pass equally well in either direction.Detailed DescriptionOverview of Traditional Fault-Protected SwitchesThe MAX4511/MAX4512/MAX4513 are fault-protected CMOS analog switches with unusual operation and construction. Traditional fault-protected switches are constructed by three series FETs. This produces good off characteristics, but fairly high on-resistance when the signals are within about 3V of each supply rail. As the voltage on one side of the switch approaches with-in about 3V of either supply rail (a fault condition), the switch impedance becomes higher, limiting the output signal range (on the protected side of the switch) to approximately 3V less than the appropriate polarity supply voltage.During a fault condition, the output current that flows from the protected side of the switch into its load comes from the fault source on the other side of the switch. I f the switch is open or the load is extremely high impedance, the input current will be very low. I f the switch is on and the load is low impedance,enough current will flow from the source to maintain the load voltage at 3V less than the supply.MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches_______________________________________________________________________________________9Overview of MAX4511/MAX4512/MAX4513The MAX4511/MAX4512/MAX4513 differ considerably from traditional fault-protection switches, with several advantages. First, they are constructed with two paral-lel FETs, allowing very low on-resistance when the switch is on. Second, they allow signals on the NC_ or NO_ pins that are within or slightly beyond the supply rails to be passed through the switch to the COM termi-nal, allowing rail-to-rail signal operation. Third, when a signal on NC_ or NO_ exceeds the supply rails by about 50mV (a fault condition), the voltage on COM_ is limited to the appropriate polarity supply voltage.Operation is identical for both fault polarities. The fault-protection extends to ±36V from GND.During a fault condition, the NO_ or NC_ input pin becomes high impedance regardless of the switch state or load resistance. If the switch is on, the COM_output current is furnished from the V+ or V- pin by “booster” FETs connected to each supply pin. These FETs can typically source or sink up to 10mA.When power is removed, the fault protection is still in effect. In this case, the NO_ or NC_ terminals are a vir-tual open circuit. The fault can be up to ±40V.The COM_ pins are not fault protected; they act as nor-mal CMOS switch pins. If a voltage source is connect-ed to any COM_ pin, it should be limited to the supply voltages. Exceeding the supply voltage will cause high currents to flow through the ESD protection diodes,possibly damaging the device (see Absolute Maximum Ratings ).Pin CompatibilityThese switches have identical pinouts to common non-fault-protected CMOS switches. Care should be exer-cised in considering them for direct replacements in existing printed circuit boards, however, since only the NO_ and NC_ pins of each switch are fault protected.Internal ConstructionInternal construction is shown in Figure 1, with the ana-log signal paths shown in bold. A single normally openFigure 1. Block DiagramM A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 10______________________________________________________________________________________(NO) switch is shown; the normally closed (NC) config-uration is identical except the logic-level translator becomes an inverter. The analog switch is formed by the parallel combination of N-channel FET N1 and P-channel FET P1, which are driven on and off simultane-ously according to the input fault condition and the logic-level state.Normal OperationTwo comparators continuously compare the voltage on the NO_ (or NC_) pin with V+ and V-. When the signal on NO_ or NC_ is between V+ and V- the switch acts normally, with FETs N1 and P1 turning on and off in response to I N_ signals. The parallel combination of N1 and P1 forms a low-value resistor between NO_ (or NC_) and COM_ so that signals pass equally well in either direction.Positive Fault ConditionWhen the signal on NO_ (or NC_) exceeds V+ by about 50mV, the high-fault comparator output is high, turning off FETs N1 and P1. This makes the NO_ (or NC_) pin high impedance regardless of the switch state. I f the switch state is “off”, all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. I f the switch state is “on”, FET P2 is turned on, sourcing cur-rent from V+ to COM_.Negative Fault ConditionWhen the signal on NO_ (or NC_) exceeds V- by about 50mV, the low-fault comparator output is high, turning off FETs N1 and P1. This makes the NO_ (or NC_) pin high impedance regardless of the switch state. I f the switch state is “off,” all FETs are turned off and both NO_ (or NC_) and COM_ are high impedance. I f the switch state is “on,” FET N2 is turned on, sinking cur-rent from COM_ to V-.Transient Fault Response and RecoveryWhen a fast rise-time and fall-time transient on I N_exceeds V+ or V-, the output (COM_) follows the input (I N_) to the supply rail with only a few nanoseconds delay. This delay is due to the switch on-resistance and circuit capacitance to ground. When the input transient returns to within the supply rails, however, there is a longer output recovery time delay. For positive faults, the recovery time is typically 3.5µs. For negative faults, the recovery time is typically 1.3µs. These values depend on the COM_ output resistance and capacitance, and are not production tested or guaranteed. The delays are not dependent on the fault amplitude. Higher COM_ output resistance and capacitance increase recovery times.COM_ and IN_ PinsFETs N2 and P2 can source about ±10mA from V+ or V-to the COM_ pin in the fault condition. Ensure that if the COM_ pin is connected to a low-resistance load, the absolute maximum current rating of 30mA is never exceeded, both in normal and fault conditions.The GND, COM_, and IN_ pins do not have fault protec-tion. Reverse ESD-protection diodes are internally con-nected between GND, COM_, IN_ and both V+ and V-. If a signal on GND, COM_, or I N_ exceeds V+ or V- by more than 300mV, one of these diodes will conduct heavily. During normal operation these reverse-biased ESD diodes leak a few nanoamps of current to V+ and V-.Fault-Protection Voltage and Power OffThe maximum fault voltage on the NC_ or NO_ pins is ±36V with power applied and ±40V with power off.Failure ModesThe MAX4511/MAX4512/MAX4513 are not lightning arrestors or surge protectors.Exceeding the fault-protection voltage limits on NO_ or NC_, even for very short periods, can cause the device to fail. The failure modes may not be obvious, and fail-ure in one switch may or may not affect other switches in the same package.GroundThere is no connection between the analog signal paths and GND. The analog signal paths consist of an N-channel and P-channel MOSFET with their sources and drains paralleled and their gates driven out of phase to V+ and V- by the logic-level translators.V+ and GND power the internal logic and logic-level translators and set the input logic thresholds. The logic-level translators convert the logic levels to switched V+and V- signals to drive the gates of the analog switch-es. This drive signal is the only connection between the power supplies and the analog signals. GND, IN_, and COM_ have ESD-protection diodes to V+ and V-.IN_ Logic-Level ThresholdsThe logic-level thresholds are CMOS and TTL compati-ble when V+ is +15V. As V+ is raised the threshold increases slightly, and when V+ reaches 25V the level threshold is about 2.8V—above the TTL output high level minimum of 2.4V, but still compatible with CMOS outputs (see Typical Operating Characteristics ).Increasing V- has no effect on the logic-level thresholds,but it does increase the gate-drive voltage to the signal FETs, reducing their on-resistance.MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches______________________________________________________________________________________11Bipolar SuppliesThe MAX4511/MAX4512/MAX4513 operate with bipolar supplies between ±4.5V and ±18V. The V+ and V- sup-plies need not be symmetrical, but their difference can not exceed the absolute maximum rating of 44V.Single SupplyThe MAX4511/MAX4512/MAX4513 operate from a sin-gle supply between +9V and +36V when V- is connect-ed to GND.High-Frequency PerformanceIn 50Ωsystems, signal response is reasonably flat up to 50MHz (see Typical Operating Characteristics ). Above20MHz, the on-response has several minor peaks that are highly layout dependent. The problem with high-fre-quency operation is not turning the switch on, but turn-ing it off. The off-state switch acts like a capacitor and passes higher frequencies with less attenuation. At 10MHz, off isolation is about -42dB in 50Ωsystems,becoming worse (approximately 20dB per decade) as frequency increases. Higher circuit impedances also make off isolation worse. Adjacent channel attenuation is about 3dB above that of a bare IC socket and is due entirely to capacitive coupling.Figure 2. Switch Turn-On/Turn-Off TimesTest Circuits/Timing DiagramsFigure 3. MAX4513 Break-Before-Make IntervalM A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 12______________________________________________________________________________________Figure 4. Charge InjectionFigure 5. COM_, NO_, NC_ CapacitanceTest Circuits/Timing Diagrams (continued)MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches______________________________________________________________________________________13Figure 6. Frequency Response, Off Isolation, and CrosstalkTest Circuits/Timing Diagrams (continued)Pin Configurations/Functional Diagrams/Truth Tables (continued)M A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 14______________________________________________________________________________________V-GNDNC4COM4IN4IN3COM30.086"(2.261mm)MAX4511NO1NO2COM1IN1IN2COM2COM4NO4IN4IN3NO3COM30.086"(2.261mm)MAX4512Ordering Information (continued)Chip TopographiesV-GNDCOM4NO4IN4IN3NC3COM3MAX45130.086"(2.261mm)TRANSISTOR COUNT: 139SUBSTRATE CONNECTED TO:V+*Contact factory for dice specifications.MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches______________________________________________________________________________________15Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 4511/M A X 4512/M A X 4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches 16______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages.)MAX4511/MAX4512/MAX4513Quad, Rail-to-Rail, Fault-Protected,SPST Analog SwitchesMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600______________________17©2002 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。

MAX3237EEAI+T中文资料

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,or visit Maxim's website at .General DescriptionThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E +3.0V-powered EIA/TIA-232 and V.28/V.24communications interface devices feature low power con-sumption, high data-rate capabilities, and enhanced electrostatic-discharge (ESD) protection. The enhanced ESD structure protects all transmitter outputs and receiver inputs to ±15kV using IEC 1000-4-2 Air-G ap Discharge, ±8kV using IEC 1000-4-2 Contact Discharge (±9kV for MAX3246E), and ±15kV using the Human Body Model. The logic and receiver I/O pins of the MAX3237E are protected to the above standards, while the transmit-ter output pins are protected to ±15kV using the Human Body Model.A proprietary low-dropout transmitter output stage delivers true RS-232 performance from a +3.0V to +5.5V power supply, using an internal dual charge pump. The charge pump requires only four small 0.1µF capacitors for opera-tion from a +3.3V supply. Each device guarantees opera-tion at data rates of 250kbps while maintaining RS-232output levels. The MAX3237E guarantees operation at 250kbps in the normal operating mode and 1Mbps in the MegaBaud™ operating mode, while maintaining RS-232-compliant output levels.The MAX3222E/MAX3232E have two receivers and two transmitters. The MAX3222E features a 1µA shutdown mode that reduces power consumption in battery-pow-ered portable systems. The MAX3222E receivers remain active in shutdown mode, allowing monitoring of external devices while consuming only 1µA of supply current. The MAX3222E and MAX3232E are pin, package, and func-tionally compatible with the industry-standard MAX242and MAX232, respectively.The MAX3241E/MAX3246E are complete serial ports (three drivers/five receivers) designed for notebook and subnotebook computers. The MAX3237E (five drivers/three receivers) is ideal for peripheral applications that require fast data transfer. These devices feature a shut-down mode in which all receivers remain active, while consuming only 1µA (MAX3241E/MAX3246E) or 10nA (MAX3237E).The MAX3222E, MAX3232E, and MAX3241E are avail-able in space-saving SO, SSOP, TQFN and TSSOP pack-ages. The MAX3237E is offered in an SSOP package.The MAX3246E is offered in the ultra-small 6 x 6 UCSP™package.ApplicationsBattery-Powered Equipment PrintersCell PhonesSmart Phones Cell-Phone Data Cables xDSL ModemsNotebook, Subnotebook,and Palmtop ComputersNext-Generation Device Features♦For Space-Constrained ApplicationsMAX3228E/MAX3229E: ±15kV ESD-Protected, +2.5V to +5.5V, RS-232 Transceivers in UCSP ♦For Low-Voltage or Data Cable ApplicationsMAX3380E/MAX3381E: +2.35V to +5.5V, 1µA, 2Tx/2Rx, RS-232 Transceivers with ±15kV ESD-Protected I/O and Logic PinsMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246E±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V ,Up to 1Mbps, True RS-232 Transceivers________________________________________________________________Maxim Integrated Products 119-1298; Rev 11; 10/07Ordering Information continued at end of data sheet.*Dice are tested at T A = +25°C, DC parameters only.**EP = Exposed paddle.Pin Configurations, Selector Guide, and Typical Operating Circuits appear at end of data sheet.MegaBaud and UCSP are trademarks of Maxim Integrated Products, Inc.†Covered by U.S. Patent numbers 4,636,930; 4,679,134;4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 TransceiversABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +3V to +5.5V, C1–C4 = 0.1µF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Notes 3, 4)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND..............................................................-0.3V to +6V V+ to GND (Note 1)..................................................-0.3V to +7V V- to GND (Note 1)...................................................+0.3V to -7V V+ + |V-| (Note 1).................................................................+13V Input Voltages T_IN, EN , SHDN , MBAUD to GND ........................-0.3V to +6V R_IN to GND.....................................................................±25V Output Voltages T_OUT to GND...............................................................±13.2V R_OUT, R_OUTB (MAX3241E)................-0.3V to (V CC + 0.3V)Short-Circuit Duration, T_OUT to GND.......................Continuous Continuous Power Dissipation (T A = +70°C)16-Pin SSOP (derate 7.14mW/°C above +70°C)..........571mW 16-Pin TSSOP (derate 9.4mW/°C above +70°C).......754.7mW 16-Pin TQFN (derate 20.8mW/°C above +70°C).....1666.7mW 16-Pin Wide SO (derate 9.52mW/°C above +70°C).....762mW 18-Pin Wide SO (derate 9.52mW/°C above +70°C).....762mW 18-Pin PDIP (derate 11.11mW/°C above +70°C)..........889mW 20-Pin TQFN (derate 21.3mW/°C above +70°C)........1702mW 20-Pin TSSOP (derate 10.9mW/°C above +70°C)........879mW 20-Pin SSOP (derate 8.00mW/°C above +70°C)..........640mW 28-Pin SSOP (derate 9.52mW/°C above +70°C)..........762mW 28-Pin Wide SO (derate 12.50mW/°C above +70°C).............1W 28-Pin TSSOP (derate 12.8mW/°C above +70°C)......1026mW 32-Lead Thin QFN (derate 33.3mW/°C above +70°C)..2666mW 6 x 6 UCSP (derate 12.6mW/°C above +70°C).............1010mW Operating Temperature Ranges MAX32_ _EC_ _...................................................0°C to +70°C MAX32_ _EE_ _.................................................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°C Bump Reflow Temperature (Note 2)Infrared, 15s..................................................................+200°C Vapor Phase, 20s..........................................................+215°C Note 1:V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.Note 2:This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the devicecan be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recom-mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and convection reflow.Preheating is required. Hand or wave soldering is not allowed.MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________3M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers4_______________________________________________________________________________________TIMING CHARACTERISTICS—MAX3237E(V CC = +3V to +5.5V, C1–C4 = 0.1µF, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.) (Note 3)±10%. MAX3237E: C1–C4 = 0.1µF tested at +3.3V ±5%, C1–C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.047µF, C2, C3, C4 =0.33µF tested at +5.0V ±10%. MAX3246E; C1-C4 = 0.22µF tested at +3.3V ±10%; C1 = 0.22µF, C2, C3, C4 = 0.54µF tested at 5.0V ±10%.Note 4:MAX3246E devices are production tested at +25°C. All limits are guaranteed by design over the operating temperature range.Note 5:The MAX3237E logic inputs have an active positive feedback resistor. The input current goes to zero when the inputs are atthe supply rails.Note 6:MAX3241EEUI is specified at T A = +25°C.Note 7:Transmitter skew is measured at the transmitter zero crosspoints.TIMING CHARACTERISTICS—MAX3222E/MAX3232E/MAX3241E/MAX3246EMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________5-6-4-202460MAX3237ETRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = GND)LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )10001500500200025003000531-1-3-5-6-2-42046-5-31-135010001500500200025003000LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )MAX3237ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCE-7.5-5.0-2.502.55.07.5MAX3237ETRANSMITTER OUTPUT VOLTAGE vs. LOAD CAPACITANCE (MBAUD = V CC )LOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )500100015002000__________________________________________Typical Operating Characteristics(V CC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k Ωand C L , T A = +25°C, unless otherwise noted.)-6-5-4-3-2-10123456010002000300040005000MAX3241ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V)302010405060020001000300040005000MAX3241EOPERATING SUPPLY CURRENT vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )04286121014010002000300040005000MAX3241ESLEW RATE vs. LOAD CAPACITANCEM A X 3237E t o c 05LOAD CAPACITANCE (pF)S L E W R A T E (V /μs )-6-5-4-3-2-10123456010002000300040005000MAX3222E/MAX3232ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P UT V O L T A G E (V )624108141216010002000300040005000MAX3222E/MAX3232ESLEW RATE vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L E W R A T E (V /μs)2520155103530404520001000300040005000MAX3222E/MAX3232E OPERATING SUPPLY CURRENT vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V CC = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3k Ωand C L , T A = +25°C, unless otherwise noted.)20604080100MAX3237ETRANSMITTER SKEW vs. LOAD CAPACITANCE(MBAUD = V CC )LOAD CAPACITANCE (pF)100015005002000T R A N S M I T T E R S K E W (n s )-6-2-42046-3-51-1352.03.03.52.54.04.55.0SUPPLY VOLTAGE (V)T R A N S M I T T E R O U T P U T V O L T A G E (V )MAX3237ETRANSMITTER OUTPUT VOLTAGE vs. SUPPLY VOLTAGE (MBAUD = GND)10203040502.0MAX3237E SUPPLY CURRENT vs. SUPPLY VOLTAGE (MBAUD = GND)SUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (m A )3.03.52.54.04.55.0MAX3246ETRANSMITTER OUTPUT VOLTAGEvs. LOAD CAPACITANCELOAD CAPACITANCE (pF)T R A N S M I T T E R O U T P U T V O L T A G E (V )4000300010002000-5-4-3-2-101234567-65000468101214160MAX3246ESLEW RATE vs. LOAD CAPACITANCELOAD CAPACITANCE (pF)S L EW R A T E (V /μs )200030001000400050001020304050600MAX3246EOPERATING SUPPLY CURRENT vs. LOAD CAPACITANCEM A X 3237E t o c 17LOAD CAPACITANCE (pF)S U P P L Y C U R R EN T (m A )1000200030004000500055453525155024681012MAX3237ESLEW RATE vs. LOAD CAPACITANCE(MBAUD = GND)LOAD CAPACITANCE (pF)S L E W R A T E (V /μs )10001500500200025003000010203050406070MAX3237ESLEW RATE vs. LOAD CAPACITANCE(MBAUD = V CC )LOAD CAPACITANCE (pF)S L E W R A T E (V /μs )5001000150020001020304050MAX3237ESUPPLY CURRENT vs. LOAD CAPACITANCE WHEN TRANSMITTING DATA (MBAUD = GND)LOAD CAPACITANCE (pF)S U P P L Y C U R R E N T (m A )10001500500200025003000MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________7Pin DescriptionM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers8_______________________________________________________________________________________MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 Transceivers_______________________________________________________________________________________9Detailed DescriptionDual Charge-Pump Voltage ConverterThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246Es’ internal power supply consists of a regu-lated dual charge pump that provides output voltages of +5.5V (doubling charge pump) and -5.5V (inverting charge pump) over the +3.0V to +5.5V V CC range. The charge pump operates in discontinuous mode; if the output voltages are less than 5.5V, the charge pump is enabled, and if the output voltages exceed 5.5V, the charge pump is disabled. Each charge pump requires a flying capacitor (C1, C2) and a reservoir capacitor (C3, C4) to generate the V+ and V- supplies (Figure 1).RS-232 TransmittersThe transmitters are inverting level translators that con-vert TTL/CMOS-logic levels to ±5V EIA/TIA-232-compli-ant levels.The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E transmitters guarantee a 250kbps data rate with worst-case loads of 3k Ωin parallel with 1000pF,providing compatibility with PC-to-PC communication software (such as LapLink™). Transmitters can be par-alleled to drive multiple receivers or mice.The MAX3222E/MAX3237E/MAX3241E/MAX3246E transmitters are disabled and the outputs are forcedinto a high-impedance state when the device is in shut-down mode (SHDN = G ND). The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E permit the outputs to be driven up to ±12V in shutdown.The MAX3222E/MAX3232E/MAX3241E/MAX3246E transmitter inputs do not have pullup resistors. Connect unused inputs to GND or V CC . The MAX3237E’s trans-mitter inputs have a 400k Ωactive positive-feedback resistor, allowing unused inputs to be left unconnected.MAX3237E MegaBaud OperationFor higher-speed serial communications, the MAX3237E features MegaBaud operation. In MegaBaud operating mode (MBAUD = V CC ), the MAX3237E transmitters guarantee a 1Mbps data rate with worst-case loads of 3k Ωin parallel with 250pF for +3.0V < V CC < +4.5V. For +5V ±10% operation, the MAX3237E transmitters guarantee a 1Mbps data rate into worst-case loads of 3k Ωin parallel with 1000pF.RS-232 ReceiversThe receivers convert RS-232 signals to CMOS-logic output levels. The MAX3222E/MAX3237E/MAX3241E/MAX3246E receivers have inverting three-state outputs.Drive EN high to place the receiver(s) into a high-impedance state. Receivers can be either active or inactive in shutdown (Table 1).Figure 1. Slew-Rate Test CircuitsLapLink is a trademark of Traveling Software.M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers10______________________________________________________________________________________The complementary outputs on the MAX3237E/MAX3241E (R_OUTB) are always active, regardless of the state of EN or SHDN . This allows the device to be used for ring indicator applications without forward biasing other devices connected to the receiver outputs. This is ideal for systems where V CC drops to zero in shutdown to accommodate peripherals such as UARTs (Figure 2).MAX3222E/MAX3237E/MAX3241E/MAX3246E Shutdown ModeSupply current falls to less than 1µA in shutdown mode (SHDN = low). The MAX3237E’s supply current falls to10nA (typ) when all receiver inputs are in the invalid range (-0.3V < R_IN < +0.3). When shut down, the device’s charge pumps are shut off, V+ is pulled down to V CC , V- is pulled to ground, and the transmitter out-puts are disabled (high impedance). The time required to recover from shutdown is typically 100µs, as shown in Figure 3. Connect SHDN to V CC if shutdown mode is not used. SHDN has no effect on R_OUT or R_OUTB (MAX3237E/MAX3241E).±15kV ESD ProtectionAs with all Maxim devices, ESD-protection structures are incorporated to protect against electrostatic dis-charges encountered during handling and assembly.The driver outputs and receiver inputs of the MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E have extra protection against static electricity. Maxim’s engineers have developed state-of-the-art structures to protect these pins against ESD of ±15kV without damage.The ESD structures withstand high ESD in all states:normal operation, shutdown, and powered down. After an ESD event, Maxim’s E versions keep working without latchup, whereas competing RS-232 products can latch and must be powered down to remove latchup.Furthermore, the MAX3237E logic I/O pins also have ±15kV ESD protection. Protecting the logic I/O pins to ±15kV makes the MAX3237E ideal for data cable applications.SHDN T2OUTT1OUT5V/div2V/divV CC = 3.3V C1–C4 = 0.1μFFigure 3. Transmitter Outputs Recovering from Shutdown or Powering UpMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 TransceiversESD protection can be tested in various ways; the transmitter outputs and receiver inputs for the MAX3222E/MAX3232E/MAX3241E/MAX3246E are characterized for protection to the following limits:•±15kV using the Human Body Model•±8kV using the Contact Discharge method specified in IEC 1000-4-2•±9kV (MAX3246E only) using the Contact Discharge method specified in IEC 1000-4-2•±15kV using the Air-G ap Discharge method speci-fied in IEC 1000-4-2Figure 4a. Human Body ESD Test ModelFigure 4b. Human Body Model Current WaveformFigure 5a. IEC 1000-4-2 ESD Test Model Figure 5b. IEC 1000-4-2 ESD Generator Current WaveformM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceiverscharacterized for protection to ±15kV per the Human Body Model.ESD Test ConditionsESD performance depends on a variety of conditions.Contact Maxim for a reliability report that documents test setup, test methodology, and test results.Human Body ModelFigure 4a shows the Human Body Model, and Figure 4b shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest,which is then discharged into the test device through a 1.5k Ωresistor.IEC 1000-4-2The IEC 1000-4-2 standard covers ESD testing and performance of finished equipment; it does not specifi-cally refer to integrated circuits. The MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E help you design equipment that meets level 4 (the highest level)of IEC 1000-4-2, without the need for additional ESD-protection components.The major difference between tests done using the Human Body Model and IEC 1000-4-2 is higher peak current in IEC 1000-4-2, because series resistance is lower in the IEC 1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC 1000-4-2 is generally lower than that measured using the Human Body Model. Figure 5a shows the IEC 1000-4-2 model, and Figure 5b shows the current waveform for the ±8kV IEC 1000-4-2 level 4 ESD Contact Discharge test. The Air-G ap Discharge test involves approaching the device with a charged probe. The Contact Discharge method connects the probe to the device before the probe is energized.Machine ModelThe Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. All pins require this protection during manufacturing, not just RS-232 inputs and outputs.Therefore, after PC board assembly, the Machine Model is less relevant to I/O ports.Table 2. Required Minimum Capacitor ValuesFigure 6a. MAX3241E Transmitter Output Voltage vs. Load Current Per TransmitterTable 3. Logic-Family Compatibility with Various Supply VoltagesMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 TransceiversApplications InformationCapacitor SelectionThe capacitor type used for C1–C4 is not critical for proper operation; polarized or nonpolarized capacitors can be used. The charge pump requires 0.1µF capaci-tors for 3.3V operation. For other supply voltages, see Table 2 for required capacitor values. Do not use val-ues smaller than those listed in Table 2. Increasing the capacitor values (e.g., by a factor of 2) reduces ripple on the transmitter outputs and slightly reduces power consumption. C2, C3, and C4 can be increased without changing C1’s value. However, do not increase C1without also increasing the values of C2, C3, C4,and C BYPASS to maintain the proper ratios (C1 to the other capacitors).When using the minimum required capacitor values,make sure the capacitor value does not degradeexcessively with temperature. If in doubt, use capaci-tors with a larger nominal value. The capacitor’s equiv-alent series resistance (ESR), which usually rises at low temperatures, influences the amount of ripple on V+and V-.Power-Supply DecouplingIn most circumstances, a 0.1µF V CC bypass capacitor is adequate. In applications sensitive to power-supply noise, use a capacitor of the same value as charge-pump capacitor C1. Connect bypass capacitors as close to the IC as possible.Operation Down to 2.7VTransmitter outputs meet EIA/TIA-562 levels of ±3.7V with supply voltages as low as 2.7V.Figure 6b. Mouse Driver Test CircuitM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 TransceiversFigure 7. Loopback Test CircuitT1IN T1OUTR1OUT5V/div5V/div5V/divV CC = 3.3V C1–C4 = 0.1μFFigure 8. MAX3241E Loopback Test Result at 120kbps T1INT1OUTR1OUT5V/div5V/div5V/divV CC = 3.3V, C1–C4 = 0.1μFFigure 9. MAX3241E Loopback Test Result at 250kbps+5V 0+5V 0-5V +5VT_INT_OUT5k Ω + 250pFR_OUTV CC = 3.3V C1–C4 = 0.1μFFigure 10. MAX3237E Loopback Test Result at 1000kbps (MBAUD = V CC )Transmitter Outputs Recoveringfrom ShutdownFigure 3 shows two transmitter outputs recovering from shutdown mode. As they become active, the two trans-mitter outputs are shown going to opposite RS-232 levels (one transmitter input is high; the other is low). Each transmitter is loaded with 3k Ωin parallel with 2500pF.The transmitter outputs display no ringing or undesir-able transients as they come out of shutdown. Note thatthe transmitters are enabled only when the magnitude of V- exceeds approximately -3.0V.Mouse DrivabilityThe MAX3241E is designed to power serial mice while operating from low-voltage power supplies. It has been tested with leading mouse brands from manu-facturers such as Microsoft and Logitech. The MAX3241E successfully drove all serial mice tested and met their current and voltage requirements.MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 TransceiversFigure 6a shows the transmitter output voltages under increasing load current at +3.0V. Figure 6b shows a typical mouse connection using the MAX3241E.High Data RatesThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E maintain the RS-232 ±5V minimum transmit-ter output voltage even at high data rates. Figure 7shows a transmitter loopback test circuit. Figure 8shows a loopback test result at 120kbps, and Figure 9shows the same test at 250kbps. For Figure 8, all trans-mitters were driven simultaneously at 120kbps into RS-232 loads in parallel with 1000pF. For Figure 9, a single transmitter was driven at 250kbps, and all transmitters were loaded with an RS-232 receiver in parallel with 1000pF.The MAX3237E maintains the RS-232 ±5.0V minimum transmitter output voltage at data rates up to 1Mbps.Figure 10 shows a loopback test result at 1Mbps with MBAUD = V CC . For Figure 10, all transmitters were loaded with an RS-232 receiver in parallel with 250pF.Interconnection with 3V and 5V LogicThe MAX3222E/MAX3232E/MAX3237E/MAX3241E/MAX3246E can directly interface with various 5V logic families, including ACT and HCT CMOS. See Table 3for more information on possible combinations of inter-connections.UCSP ReliabilityThe UCSP represents a unique packaging form factor that may not perform equally to a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user’s assembly methods, circuit board material, and usage environ-ment. The user should closely review these areas when considering use of a UCSP package. Performance through Operating Life Test and Moisture Resistance remains uncompromised as the wafer-fabrication process primarily determines it.Mechanical stress performance is a greater considera-tion for a UCSP package. UCSPs are attached through direct solder contact to the user’s PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder joint contact integrity must be consid-ered. Table 4 shows the testing done to characterize the UCSP reliability performance. In conclusion, the UCSP is capable of performing reliably through envi-ronmental stresses as indicated by the results in the table. Additional usage data and recommendations are detailed in the UCSP application note, which can be found on Maxim’s website at .Table 4. Reliability Test DataM A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers__________________________________________________________Pin ConfigurationsMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 TransceiversPin Configurations (continued)M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers__________________________________________________Typical Operating CircuitsMAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 Transceivers_____________________________________Typical Operating Circuits (continued)M A X 3222E /M A X 3232E /M A X 3237E /M A X 3241E †/M A X 3246EUp to 1Mbps, True RS-232 Transceivers_____________________________________Typical Operating Circuits (continued)MAX3222E/MAX3232E/MAX3237E/MAX3241E †/MAX3246EUp to 1Mbps, True RS-232 Transceivers______________________________________________________________________________________21Selector Guide___________________Chip InformationTRANSISTOR COUNT:MAX3222E/MAX3232E: 1129MAX3237E: 2110MAX3241E: 1335MAX3246E: 842PROCESS: BICMOSOrdering Information (continued)†Requires solder temperature profile described in the AbsoluteMaximum Ratings section. UCSP Reliability is integrally linked to the user’s assembly methods, circuit board material, and environment. Refer to the UCSP Reliability Notice in the UCSP Reliability section of this datasheet for more information.**EP = Exposed paddle.。

MAX485中文资料

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_______________________________概述MAX481、MAX483、MAX485、MAX487-MAX491以及MAX1487是用于RS-485与RS-422通信的低功耗收发器，每个器件中都具有一个驱动器和一个接收器。

MAX483、MAX487、MAX488以及MAX489具有限摆率驱动器，可以减小EMI ，并降低由不恰当的终端匹配电缆引起的反射，实现最高250k b p s 的无差错数据传输。

M A X 481、MAX485、MAX490、MAX491、MAX1487的驱动器摆率不受限制，可以实现最高2.5Mbps 的传输速率。

这些收发器在驱动器禁用的空载或满载状态下，吸取的电源电流在120(A 至500(A 之间。

另外，MAX481、MAX483与MAX487具有低电流关断模式，仅消耗0.1µA 。

所有器件都工作在5V 单电源下。

驱动器具有短路电流限制，并可以通过热关断电路将驱动器输出置为高阻状态，防止过度的功率损耗。

接收器输入具有失效保护特性，当输入开路时，可以确保逻辑高电平输出。

MAX487与MAX1487具有四分之一单位负载的接收器输入阻抗，使得总线上最多可以有128个M A X 487/MAX1487收发器。

使用MAX488-MAX491可以实现全双工通信，而MAX481、MAX483、MAX485、MAX487与MAX1487则为半双工应用设计。

_______________________________应用低功耗RS-485收发器低功耗RS-422收发器电平转换器用于EMI 敏感应用的收发器工业控制局域网____________________下一代器件的特性♦容错应用MAX3430: ±80V 故障保护、失效保护、1/4单位负载、+3.3V 、RS-485收发器MAX3440E-MAX3444E: ±15kV ESD 保护、±60V 故障保护、10Mbps 、失效保护、RS-485/J1708收发器♦对于空间受限应用MAX3460-MAX3464: +5V 、失效保护、20Mbps 、Profibus RS-485/RS-422收发器MAX3362: +3.3V 、高速、RS-485/RS-422收发器，采用SOT23封装MAX3280E-MAX3284E: ±15kV ESD 保护、52Mbps 、+3V 至+5.5V 、SOT23、RS-485/RS-422、真失效保护接收器MAX3293/MAX3294/MAX3295: 20Mbps 、+3.3V 、SOT23、RS-485/RS-422发送器♦对于多通道收发器应用MAX3030E-MAX3033E: ±15kV ESD 保护、+3.3V 、四路RS-422发送器♦对于失效保护应用MAX3080-MAX3089: 失效保护、高速(10Mbps)、限摆率RS-485/RS-422收发器♦对于低电压应用MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E: +3.3V 供电、±15kV ESD 保护、12Mbps 、限摆率、真正的RS-485/RS-422收发器MAX481/MAX483/MAX485/MAX487–MAX491/MAX1487低功耗、限摆率、RS-485/RS-422收发器_____________________________________________________________________选择表19-0122; Rev 8; 10/03定购信息在本资料的最后给出。

MAX485中文数据手册资料

MAX485中文资料2009-11-28 14:49MAX485中文资料，MAX485 PDF,DATASHEET,电路图，通讯程序内容介绍：MAX481、MAX483、MAX485、MAX487-MAX491以及MAX1487是用于RS-485与RS-422通信的低功耗收发器，每个器件中都具有一个驱动器和一个接收器。

MAX483、MAX487、MAX488以及MAX489具有限摆率驱动器，可以减小EMI，并降低由不恰当的终端匹配电缆引起的反射，实现最高250kbps 的无差错数据传输。

MAX481、MAX485、MAX490、MAX491、MAX1487的驱动器摆率不受限制，可以实现最高2.5Mbps的传输速率。

这些收发器在驱动器禁用的空载或满载状态下，吸取的电源电流在120(A 至500(A 之间。

另外，MAX481、MAX483与MAX487具有低电流关断模式，仅消耗0.1µA。

所有器件都工作在5V单电源下。

驱动器具有短路电流限制，并可以通过热关断电路将驱动器输出置为高阻状态，防止过度的功率损耗。

接收器输入具有失效保护特性，当输入开路时，可以确保逻辑高电平输出。

MAX481,MAX483,MAX485,MAX487,MAX1487引脚（管脚）图及工作电路MAX485通讯程序与MAX232通讯程序在本质上是一样的，只是MAX485通讯程序需要加上通讯方向控制。

下面是基于mega128 16AU的485通信中断接收的程序，调试通过,晶振为外部16M,MAX485的DE和RE短接连PC0口，程序如下：#define SEND_485 PORTC|=0x01#define READ_485 PORTC&=0xfevoid Usart1_init(void) //16Mhz频率，设置波特率9.6k，8位数据位，无校验，接收发送使能，1位停止位{UBRR1H=0;UBRR1L=103;UCSR1B=(1<<RXCIE1)|(1<<RXEN1)|(1<<TXEN1); //发送接收使能，使用中断方式，UCSR1C=(1<<UCSZ10)|(1<<UCSZ11); //0x06 8位数据，1位停止位，无校验}void Usart1_transmit(unsigned char c) //查询方式发送接收字符函数{SEND_485;DelayBus();DelayBus();DelayBus();while( !(UCSR1A&(1<<UDRE1)));//等待发送缓冲区为空UDR1=c;while(!(UCSR1A&(1<<TXC1)));// UDCR0=c;UCSR1A |= _BV(TXC1);//将发送结束标志位清零// SET_BIT(UCSR1A,);READ_485;direction++;}SIGNAL(SIG_UART1_RECV)//serial port 1 {if(UCSR1A&(1<<RXC1)){rec1buff=UDR1;rec1_flag=1;。

MAX485EEPA+中文资料

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) ..800mW 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW Operating Temperature Ranges MAX4_ _C_ _/MAX1487EC_ A .............................0°C to +70°C MAX4_ _E_ _/MAX1487EE_ A...........................-40°C to +85°C StorageБайду номын сангаасTemperature Range .............................-65°C to +160°C Lead Temperature (soldering, 10sec) .............................+300°C
Receiver Output Voltage (RO)....................-0.5V to (VCC + 0.5V)
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) ....727mW
Ordering Information
PART MAX481ECPA MAX481ECSA MAX481EEPA MAX481EESA MAX483ECPA MAX483ECSA MAX483EEPA MAX483EESA

MAX5482ETE+T中文资料

ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +5.25V, VSS = GND = 0, VH = VDD, VL = 0, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VDD = +5.0V, TA = +25°C, unless otherwise noted.) (Note 1)
Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-60°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C
Applications
Gain and Offset Adjustment
Low-Drift Programmable Gain Amplifiers
LCD Contrast Adjustment Mechanical Potentiometer
Pressure Sensors
Replacement
元器件交易网
19-3708; Rev 4; 12/07
MAX5481–MAX5484

MEMORY存储芯片MAX202CWE+T中文规格书

●Saves Board Space •Integrated Charge Pump CircuitryEliminates the Need for a Bipolar ±12V SupplyEnables Single Supply Operation From Either +5Vor 9V to +12V•Integrated 0.1μF Capacitors (MAX203, MAX205)•24 pin SSOP Package Saves Up to 40% VersusSO Package●Saves Power for Longer Battery Operation•5μW Shutdown Mode (MAX200, MAX205,MAX206, MAX211)•75μW Ring Indicator Monitoring with Two ActiveReceivers (MAX213)Applications ●Battery-Powered Equipment ●Handheld Equipment ●Portable Diagnostics Equipment Selector Guide continued at end of data sheet.19-0065; Rev 8; 1/15PART POWER-SUPPLYVOLTAGE (V)NUMBER OF RS-232 DRIVERS NUMBER OF RS-232 RECEIVERS NUMBER OF RECEIVERS ACTIVE IN SHUTDOWN NUMBER OF EXTERNAL CAPACITORS (0.1μF)LOW-POWER SHUTDOWN/TTL THREE-STATE MAX200+55004Yes/No MAX201+5 and +9.0 to +13.22202No/No MAX202+52204No/No MAX203+5220None No/No General DescriptionMAX200-MAX209, MAX211, and MAX213 are a family of RS-232 and V.28 transceivers with integrated charge pump circuitry for single +5V supply operation.The drivers maintain the ±5V EIA/TIA-232E output signal levels at data rates in excess of 120kbps when loaded in accordance with the EIA/TIA-232E specification.The MAX211 and MAX213 are available in a 28-pin, wide small-outline (SO) package and a 28-pin shrink small-outline (SSOP) package, which occupies only 40% of the area of the SO. The MAX207 is available in a 24-pin SO package and a 24-pin SSOP . The MAX203 and MAX205 use no external components and are recommended for applications with limited circuit board space.Bene its and FeaturesSelector GuideTypical Operating Circuit 找MEMORY、二三极管上美光存储MAX200–MAX209/ MAX211/MAX213+5V, RS-232 Transceivers with 0.1μF External CapacitorsIntegrated │9MAX200 Pin Configuration/Typical Operating Circuit。

MAX485ECPA中文资料

General DescriptionThe MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environ-ments. Each driver output and receiver input is protected against ±15kV electro-static discharge (ESD) shocks,without latchup. These parts contain one driver and one receiver. The MAX483E, MAX487E, MAX488E, and MAX489E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly termi-nated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481E,MAX485E, MAX490E, MAX491E, and MAX1487E are not limited, allowing them to transmit up to 2.5Mbps.These transceivers draw as little as 120µA supply cur-rent when unloaded or when fully loaded with disabled drivers (see Selector Guide ). Additionally, the MAX481E,MAX483E, and MAX487E have a low-current shutdown mode in which they consume only 0.5µA. All parts oper-ate from a single +5V supply.Drivers are short-circuit current limited, and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high-impedance state. The receiver input has a fail-safe feature that guar-antees a logic-high output if the input is open circuit.The MAX487E and MAX1487E feature quarter-unit-load receiver input impedance, allowing up to 128 trans-ceivers on the bus. The MAX488E–MAX491E are designed for full-duplex communications, while the MAX481E, MAX483E, MAX485E, MAX487E, and MAX1487E are designed for half-duplex applications.For applications that are not ESD sensitive see the pin-and function-compatible MAX481, MAX483, MAX485,MAX487–MAX491, and MAX1487.ApplicationsLow-Power RS-485 Transceivers Low-Power RS-422 Transceivers Level TranslatorsTransceivers for EMI-Sensitive Applications Industrial-Control Local Area NetworksNext-Generation Device Features♦For Fault-Tolerant Applications:MAX3430: ±80V Fault-Protected, Fail-Safe, 1/4-Unit Load, +3.3V, RS-485 TransceiverMAX3080–MAX3089: Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited, RS-485/RS-422Transceivers ♦For Space-Constrained Applications:MAX3460–MAX3464: +5V, Fail-Safe, 20Mbps,Profibus, RS-485/RS-422 TransceiversMAX3362: +3.3V, High-Speed, RS-485/RS-422Transceiver in a SOT23 PackageMAX3280E–MAX3284E: ±15kV ESD-Protected,52Mbps, +3V to +5.5V, SOT23, RS-485/RS-422True Fail-Safe ReceiversMAX3030E–MAX3033E: ±15kV ESD-Protected,+3.3V, Quad RS-422 Transmitters ♦For Multiple Transceiver Applications:MAX3293/MAX3294/MAX3295: 20Mbps, +3.3V,SOT23, RS-485/RS-422 Transmitters ♦For Fail-Safe Applications:MAX3440E–MAX3444E: ±15kV ESD-Protected,±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers ♦For Low-Voltage Applications:MAX3483E/MAX3485E/MAX3486E/MAX3488E/MAX3490E/MAX3491E: +3.3V Powered, ±15kV ESD-Protected, 12Mbps, Slew-Rate-Limited, True RS-485/RS-422 TransceiversMAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers________________________________________________________________Maxim Integrated Products 1Ordering Information19-0410; Rev 4; 10/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering Information continued at end of data sheet.Selector Guide appears at end of data sheet .M A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers2_______________________________________________________________________________________Supply Voltage (V CC ) (12V)Control Input Voltage (–R —E –, DE)...................-0.5V to (V CC + 0.5V)Driver Input Voltage (DI).............................-0.5V to (V CC + 0.5V)Driver Output Voltage (Y, Z; A, B)..........................-8V to +12.5V Receiver Input Voltage (A, B).................................-8V to +12.5V Receiver Output Voltage (RO)....................-0.5V to (V CC + 0.5V)Continuous Power Dissipation (T A = +70°C)8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)....727mW14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)..800mW 8-Pin SO (derate 5.88mW/°C above +70°C).................471mW 14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW Operating Temperature RangesMAX4_ _C_ _/MAX1487EC_ A.............................0°C to +70°C MAX4__E_ _/MAX1487EE_ A...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +160°C Lead Temperature (soldering, 10sec).............................+300°CDC ELECTRICAL CHARACTERISTICS(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.ABSOLUTE MAXIMUM RATINGSPARAMETERSYMBOL MINTYPMAX UNITS Driver Common-Mode Output VoltageV OC 3V Change in Magnitude of Driver Differential Output Voltage for Complementary Output States ∆V OD 0.2V Change in Magnitude of Driver Common-Mode Output Voltage for Complementary Output States ∆V OD 0.2V Input High Voltage V IH 2.0V Input Low Voltage V IL 0.8V Input CurrentI IN1±2µADifferential Driver Output (no load)V OD15V 2V Differential Driver Output (with load)V OD2 1.551.0-0.8mA0.25mA -0.2Receiver Differential Threshold Voltage-0.20.2V Receiver Input Hysteresis ∆V TH 70mV Receiver Output High Voltage V OH 3.5Receiver Output Low Voltage V OL 0.4V Three-State (high impedance)Output Current at ReceiverI OZR±1µA 12k ΩCONDITIONSDE = 0V;V CC = 0V or 5.25V,all devices except MAX487E/MAX1487E R = 27Ωor 50Ω, Figure 8R = 27Ωor 50Ω, Figure 8R = 27Ωor 50Ω, Figure 8DE, DI, –R —E–MAX487E/MAX1487E,DE = 0V, V CC = 0V or 5.25VDE, DI, –R —E–DE, DI, –R —E–-7V ≤V CM ≤12V V CM = 0VI O = -4mA, V ID = 200mV I O = 4mA, V ID = -200mV R = 50Ω(RS-422)0.4V ≤V O ≤2.4VR = 27Ω(RS-485), Figure 8-7V ≤V CM ≤12V, all devices except MAX487E/MAX1487EReceiver Input Resistance R IN-7V ≤V CM ≤12V, MAX487E/MAX1487E48k ΩV TH I IN2Input Current (A, B)V IN = 12V V IN = -7V V IN = 12V V IN = -7VVMAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 TransceiversSWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487EDC ELECTRICAL CHARACTERISTICS (continued)(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)M A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers4_______________________________________________________________________________________SWITCHING CHARACTERISTICS—MAX483E, MAX487E/MAX488E/MAX489E(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)SWITCHING CHARACTERISTICS—MAX481E/MAX485E, MAX490E/MAX491E, MAX1487E(continued)(V CC = 5V ±5%, T A = T MIN to T MAX , unless otherwise noted.) (Notes 1, 2)2251000Figures 11 and 13, C L = 100pF, S2 closed Figures 11 and 13, C L = 100pF, S1 closed Figures 9 and 15, C L = 15pF, S2 closed,A - B = 2VCONDITIONSns 45100t ZH(SHDN)Driver Enable from Shutdown toOutput High (MAX481E)nsFigures 9 and 15, C L = 15pF, S1 closed,B - A = 2Vt ZL(SHDN)Receiver Enable from Shutdownto Output Low (MAX481E)ns 45100t ZL(SHDN)Driver Enable from Shutdown toOutput Low (MAX481E)ns 2251000t ZH(SHDN)Receiver Enable from Shutdownto Output High (MAX481E)UNITS MINTYP MAX SYMBOLPARAMETERt PLH t SKEW Figures 10 and 12, R DIFF = 54Ω,C L1= C L2= 100pFt PHL Figures 10 and 12, R DIFF = 54Ω,C L1= C L2= 100pFDriver Input to Output Driver Output Skew to Output ns 20800ns ns 2000MAX483E/MAX487E, Figures 11 and 13,C L = 100pF, S2 closedt ZH(SHDN)Driver Enable from Shutdown to Output High2502000ns2500MAX483E/MAX487E, Figures 9 and 15,C L = 15pF, S1 closedt ZL(SHDN)Receiver Enable from Shutdown to Output Lowns 2500MAX483E/MAX487E, Figures 9 and 15,C L = 15pF, S2 closedt ZH(SHDN)Receiver Enable from Shutdown to Output Highns 2000MAX483E/MAX487E, Figures 11 and 13,C L = 100pF, S1 closedt ZL(SHDN)Driver Enable from Shutdown to Output Lowns 50200600MAX483E/MAX487E (Note 5)t SHDN Time to Shutdownt PHL t PLH , t PHL < 50% of data period Figures 9 and 15, C RL = 15pF, S2 closed Figures 9 and 15, C RL = 15pF, S1 closed Figures 9 and 15, C RL = 15pF, S2 closed Figures 9 and 15, C RL = 15pF, S1 closed Figures 11 and 13, C L = 15pF, S2 closed Figures 10 and 14, R DIFF = 54Ω,C L1= C L2= 100pFFigures 11 and 13, C L = 15pF, S1 closed Figures 11 and 13, C L = 100pF, S1 closed Figures 11 and 13, C L = 100pF, S2 closed CONDITIONSkbps 250f MAX 2508002000Maximum Data Rate ns 2550t HZ Receiver Disable Time from High ns 25080020002550t LZ Receiver Disable Time from Low ns 2550t ZH Receiver Enable to Output High ns 2550t ZL Receiver Enable to Output Low ns ns 1003003000t HZ t SKD Driver Disable Time from High I t PLH - t PHL I DifferentialReceiver SkewFigures 10 and 14, R DIFF = 54Ω,C L1= C L2= 100pFns 3003000t LZ Driver Disable Time from Low ns 2502000t ZL Driver Enable to Output Low ns Figures 10 and 12, R DIFF = 54Ω,C L1= C L2= 100pFns 2502000t R , t F 2502000Driver Rise or Fall Time ns t PLH Receiver Input to Output2502000t ZH Driver Enable to Output High UNITS MIN TYP MAX SYMBOL PARAMETERMAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers_______________________________________________________________________________________505101520253035404550OUTPUT CURRENT vs.RECEIVER OUTPUT LOW VOLTAGEM A X 481E -01OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )1.52.02.51.00.50.10.20.30.40.50.60.70.80.9-60-2060RECEIVER OUTPUT LOW VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T L O W V O L T A G E (V )20100-4040800-5-10-15-20-251.53.0OUTPUT CURRENT vs.RECEIVER OUTPUT HIGH VOLTAGEM A X 481E -02OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )5.04.54.02.02.53.53.03.23.43.63.84.04.24.44.64.8-60-2060RECEIVER OUTPUT HIGH VOLTAGEvs. TEMPERATURETEMPERATURE (°C)O U T P U T H I G H V O L T A G E (V )20100-4040800102030405060708090DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGEM A X 481E -05DIFFERENTIAL OUTPUT VOLTAGE (V)O U T P U T C U R R E N T (m A )1.52.0 2.53.0 3.54.0 4.51.00.50__________________________________________Typical Operating Characteristics(V CC = 5V, T A = +25°C, unless otherwise noted.)NOTES FOR ELECTRICAL/SWITCHING CHARACTERISTICSNote 1:All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to deviceground unless otherwise specified.Note 2:All typical specifications are given for V CC = 5V and T A = +25°C.Note 3:Supply current specification is valid for loaded transmitters when DE = 0V.Note 4:Applies to peak current. See Typical Operating Characteristics.Note 5:The MAX481E/MAX483E/MAX487E are put into shutdown by bringing –R —E –high and DE low. If the inputs are in this state forless than 50ns, the parts are guaranteed not to enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See Low-Power Shutdown Mode section.M A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers6___________________________________________________________________________________________________________________Typical Operating Characteristics (continued)(V CC = 5V, T A = +25°C, unless otherwise noted.)1.52.32.22.12.01.91.81.71.6-60-2060DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURETEMPERATURE (°C)D I F FE R E N T I A L O U T P U T V O L T A G E (V )20100-404080020406080100120140OUTPUT CURRENT vs. DRIVER OUTPUT LOW VOLTAGEM A X 481E -07OUTPUT LOW VOLTAGE (V)O U T P U T C U R R E N T (m A )246810120-10-20-30-40-50-60-70-80-90-100-8-2OUTPUT CURRENT vs. DRIVER OUTPUT HIGH VOLTAGEM A X 481E -08OUTPUT HIGH VOLTAGE (V)O U T P U T C U R R E N T (m A )642-6-400100200300400500600-60-2060MAX481E/MAX485E/MAX490E/MAX491E SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )20100-4040800100200300400500600-60-2060MAX483E/MAX487E–MAX489E SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )20100-404080100200300400500600-60-2060MAX1487ESUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )20100-404080±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers_______________________________________________________________________________________7MAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E______________________________________________________________Pin DescriptionM A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers8_________________________________________________________________________________________________Function Tables (MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E) Table 1. Transmitting__________Applications Information The MAX481E/MAX483E/MAX485E/MAX487E–MAX491E and MAX1487E are low-power transceivers for RS-485 and RS-422 communications. These “E” versions of the MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 provide extra protection against ESD. The rugged MAX481E, MAX483E, MAX485E, MAX497E–MAX491E, and MAX1487E are intended for harsh envi-ronments where high-speed communication is important. These devices eliminate the need for transient suppres-sor diodes and the associated high capacitance loading. The standard (non-“E”) MAX481, MAX483, MAX485, MAX487–MAX491, and MAX1487 are recommended for applications where cost is critical.The MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E can transmit and receive at data rates up to 2.5Mbps, while the MAX483E, MAX487E, MAX488E, and MAX489E are specified for data rates up to 250kbps. The MAX488E–MAX491E are full-duplex transceivers, while the MAX481E, MAX483E, MAX487E, and MAX1487E are half-duplex. In addition, driver-enable (DE) and receiver-enable (RE) pins are included on the MAX481E, MAX483E, MAX485E, MAX487E, MAX489E, MAX491E, and MAX1487E. When disabled, the driver and receiver outputs are high impedance.±15kV ESD Protection As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electro-static discharges encountered during handling and assembly. The driver outputs and receiver inputs have extra protection against static electricity. Maxim’s engi-neers developed state-of-the-art structures to protect these pins against ESD of ±15kV without damage. The ESD structures withstand high ESD in all states: normal operation, shutdown, and powered down. After an ESD event, Maxim’s MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E keep working without latchup.ESD protection can be tested in various ways; the transmitter outputs and receiver inputs of this product family are characterized for protection to ±15kV using the Human Body Model.Other ESD test methodologies include IEC10004-2 con-tact discharge and IEC1000-4-2 air-gap discharge (for-merly IEC801-2).ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test set-up, test methodology, and test results.Human Body Model Figure 4 shows the Human Body Model, and Figure 5 shows the current waveform it generates when dis-charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of inter-est, which is then discharged into the test device through a 1.5kΩresistor.IEC1000-4-2 The IEC1000-4-2 standard covers ESD testing and per-formance of finished equipment; it does not specifically refer to integrated circuits (Figure 6).MAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers_______________________________________________________________________________________9M A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers10______________________________________________________________________________________Figure 8. Driver DC Test LoadFigure 9. Receiver Timing Test LoadMAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers______________________________________________________________________________________11Figure 10. Driver/Receiver Timing Test Circuit Figure 11. Driver Timing Test LoadFigure 12. Driver Propagation DelaysFigure 13. Driver Enable and Disable Times (except MAX488E and MAX490E)Figure 14. Receiver Propagation DelaysFigure 15. Receiver Enable and Disable Times (except MAX488E and MAX490E)M A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers12______________________________________________________________________________________The major difference between tests done using the Human Body Model and IEC1000-4-2 is higher peak current in IEC1000-4-2, because series resistance is lower in the IEC1000-4-2 model. Hence, the ESD with-stand voltage measured to IEC1000-4-2 is generally lower than that measured using the Human Body Model. Figure 7 shows the current waveform for the 8kV IEC1000-4-2 ESD contact-discharge test.The air-gap test involves approaching the device with a charged probe. The contact-discharge method connects the probe to the device before the probe is energized.Machine ModelThe Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resis-tance. Its objective is to emulate the stress caused by contact that occurs with handling and assembly during manufacturing. Of course, all pins require this protec-tion during manufacturing—not just inputs and outputs.Therefore,after PC board assembly,the Machine Model is less relevant to I/O ports.MAX487E/MAX1487E:128 Transceivers on the BusThe 48k Ω, 1/4-unit-load receiver input impedance of the MAX487E and MAX1487E allows up to 128 transceivers on a bus, compared to the 1-unit load (12k Ωinput impedance) of standard RS-485 drivers (32 transceivers maximum). Any combination of MAX487E/MAX1487E and other RS-485 transceivers with a total of 32 unit loads or less can be put on the bus. The MAX481E,MAX483E, MAX485E, and MAX488E–MAX491E have standard 12k Ωreceiver input impedance.MAX483E/MAX487E/MAX488E/MAX489E:Reduced EMI and Reflections The MAX483E and MAX487E–MAX489E are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. Figure 16shows the driver output waveform and its Fourier analy-sis of a 150kHz signal transmitted by a MAX481E,MAX485E, MAX490E, MAX491E, or MAX1487E. High-frequency harmonics with large amplitudes are evident.Figure 17 shows the same information displayed for a MAX483E, MAX487E, MAX488E, or MAX489E transmit-ting under the same conditions. Figure 17’s high-fre-quency harmonics have much lower amplitudes, and the potential for EMI is significantly reduced.Low-Power Shutdown Mode (MAX481E/MAX483E/MAX487E)A low-power shutdown mode is initiated by bringing both RE high and DE low. The devices will not shut down unless both the driver and receiver are disabled.In shutdown, the devices typically draw only 0.5µA of supply current.RE and DE may be driven simultaneously; the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown.For the MAX481E, MAX483E, and MAX487E, the t ZH and t ZL enable times assume the part was not in the low-power shutdown state (the MAX485E, MAX488E–MAX491E, and MAX1487E can not be shut down). The t ZH(SHDN)and t ZL(SHDN)enable times assume the parts were shut down (see Electrical Characteristics ).500kHz/div0Hz5MHz 10dB/div Figure 16. Driver Output Waveform and FFT Plot ofMAX485E/MAX490E/MAX491E/MAX1487E Transmitting a 150kHz Signal500kHz/div0Hz5MHz10dB/divFigure 17. Driver Output Waveform and FFT Plot ofMAX483E/MAX487E–MAX489E Transmitting a 150kHz SignalIt takes the drivers and receivers longer to become enabled from the low-power shutdown state (t ZH(SHDN), t ZL(SHDN)) than from the operating mode (t ZH, t ZL). (The parts are in operating mode if the RE, DE inputs equal a logical 0,1 or 1,1 or 0, 0.)Driver Output Protection Excessive output current and power dissipation caused by faults or by bus contention are prevented by two mechanisms. A foldback current limit on the output stage provides immediate protection against short circuits over the whole common-mode voltage range (see Typical Operating Characteristics). In addition, a thermal shut-down circuit forces the driver outputs into a high-imped-ance state if the die temperature rises excessively.Propagation Delay Many digital encoding schemes depend on the differ-ence between the driver and receiver propagation delay times. Typical propagation delays are shown in Figures 19–22 using Figure 18’s test circuit.The difference in receiver delay times, t PLH- t PHL, is typically under 13ns for the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E, and is typically less than 100ns for the MAX483E and MAX487E–MAX489E.The driver skew times are typically 5ns (10ns max) for the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E, and are typically 100ns (800ns max) for the MAX483E and MAX487E–MAX489E.Typical Applications The MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E transceivers are designed for bidirectional data communications on multipoint bus transmission lines. Figures 25 and 26 show typical net-work application circuits. These parts can also be used as line repeaters, with cable lengths longer than 4000 feet. To minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line should be kept as short as possi-ble. The slew-rate-limited MAX483E and MAX487E–MAX489E are more tolerant of imperfect termination. Bypass the V CC pin with 0.1µF.Isolated RS-485 For isolated RS-485 applications, see the MAX253 and MAX1480 data sheets.Line Length vs. Data Rate The RS-485/RS-422 standard covers line lengths up to 4000 feet. Figures 23 and 24 show the system differen-tial voltage for the parts driving 4000 feet of 26AWG twisted-pair wire at 110kHz into 100Ωloads.Figure 18. Receiver Propagation Delay Test CircuitMAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers ______________________________________________________________________________________13M A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers14______________________________________________________________________________________25ns/div 5V/divRO B A500mV/div Figure 19. MAX481E/MAX485E/MAX490E/MAX1487E Receiver t PHL25ns/div5V/div ROBA500mV/divFigure 20. MAX481E/MAX485E/MAX490E/MAX491E/MAX1487E Receiver t PLH200ns/div 5V/divRO B A500mV/div Figure 21. MAX483E/MAX487E–MAX489E Receiver t PHL200ns/div5V/div ROBA500mV/divFigure 22. MAX483E/MAX487E–MAX489E Receiver t PLH2µs/div DO 0V0V5V5V -1V 0DIV A - V BFigure 23. MAX481E/MAX485E/MAX490E/MAX491E/MAX1487E System Differential Voltage at 110kHz Driving 4000ft of Cable 2µs/divDO0V0V 5V 5V -1V1V0DIV B - V AFigure 24. MAX483E/MAX1487E–MAX489E System Differential Voltage at 110kHz Driving 4000ft of CableMAX481E/MAX483E/MAX485E/MAX487E–MAX491E/MAX1487E±15kV ESD-Protected, Slew-Rate-Limited,Low-Power, RS-485/RS-422 Transceivers______________________________________________________________________________________15Figure 26. MAX488E–MAX491E Full-Duplex RS-485 NetworkFigure 25. MAX481E/MAX483E/MAX485E/MAX487E/MAX1487E Typical Half-Duplex RS-485 NetworkM A X 481E /M A X 483E /M A X 485E /M A X 487E –M A X 491E /M A X 1487E±15kV ESD-Protected, Slew-Rate-Limited, Low-Power, RS-485/RS-422 Transceivers Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.16____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.Package InformationFor the latest package outline information, go to /packages .Ordering Information (continued)Selector GuideChip InformationTRANSISTOR COUNT: 295。

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For pricing delivery, and ordering information please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .________________General DescriptionThe MAX4581/MAX4582/MAX4583 are low-voltage,CMOS analog ICs configured as an 8-channel multiplexer (MAX4581), two 4-channel multiplexers (MAX4582), and three single-pole/double-throw (SPDT) switches (MAX4583).These CMOS devices can operate continuously with ±2V to ±6V dual power supplies or a +2V to +12V sin-gle supply. Each switch can handle rail-to-rail analog signals. The off-leakage current is only 1nA at +25°C or 5nA at +85°C.All digital inputs have 0.8V to 2.4V logic thresholds,ensuring TTL/CMOS-logic compatibility when using a single +5V or dual ±5V supplies.________________________ApplicationsBattery-Operated Equipment Audio and Video Signal Routing Low-Voltage Data-Acquisition Systems Communications Circuits Automotive____________________________Featureso Offered in Automotive Temperature Range (-40°C to +125°C)o Guaranteed On-Resistance80Ωwith ±5V Supplies150Ωwith Single +5V Supplyo Guaranteed On-Resistance Match Between Channelso Guaranteed Low Off-Leakage Current 1nA at +25°Co Guaranteed Low On-Leakage Current 1nA at +25°Co +2V to +12V Single-Supply Operation ±2V to ±6V Dual-Supply Operation o TTL/CMOS-Logic Compatible o Low Distortion: < 0.02% (600Ω)o Low Crosstalk: < -96dB (50Ω, MAX4582)o High Off-Isolation: < -74dB (50Ω)MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches________________________________________________________________Maxim Integrated Products 1____________________________________Pin Configurations/Functional Diagrams19-1328; Rev 5; 6/07Ordering Information continued at end of data sheet.M A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS —Dual Supplies(V CC = 4.5V to 5.5V, V EE = -4.5V to -5.5V, V _H = 2.4V, V _L = 0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Voltages Referenced to V EEV CC .........................................................................-0.3V to 13V Voltage into Any Terminal (Note 1)...(V EE - 0.3V) to (V CC + 0.3V)Continuous Current into Any Terminal..............................±20mA Peak Current, X_, Y_, Z_(pulsed at 1ms, 10% duty cycle)...................................±40mA ESD per Method 3015.7..................................................>2000V Continuous Power Dissipation (T A = +70°C)16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW 16-Pin Narrow SO (derate 8.70mW/°C above +70°C).....696mW16-Pin QSOP (derate 8.3mW/°C above +70°C)...............667mW 16-Pin TSSOP (derate 6.7mW/°C above +70°C).............457mW 16-Pin QFN (derate 18.5mW/°C above +70°C).............1481mW Operating Temperature RangesMAX458_C_ .........................................................0°C to +70°C MAX458_E_ ......................................................-40°C to +85°C MAX458_A_.....................................................-40°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CNote 1:Voltages exceeding V CC or V EE on any signal terminal are clamped by internal diodes. Limit forward-diode current to maxi-mum current rating.MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS —Dual Supplies (continued)(V CC = 4.5V to 5.5V, V EE = -4.5V to -5.5V, V _H = 2.4V, V _L = 0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)M A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches 4_______________________________________________________________________________________ELECTRICAL CHARACTERISTICS —Single +5V Supply(V CC = 4.5V to 5.5V, V EE = 0V, V _H = 2.4V, V _L = 0.8V, T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches_______________________________________________________________________________________5ELECTRICAL CHARACTERISTICS —Single +3V Supply(V= 2.7V to 3.6V, V = 0V, V = 2.0V, V = 0.5V, T = T to T , unless otherwise noted. Typical values are at T = +25°C.)Note 2:The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.Note 3:∆R ON = R ON(MAX)- R ON(MIN).Note 4:Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specifiedanalog signal ranges; i.e., V X_, V Y_, V Z_= 3V to 0 and 0 to -3V.Note 5:Leakage parameters are 100% tested at maximum-rated hot operating temperature, and guaranteed by correlation at T A = +25°C.Note 6:Guaranteed by design, not production tested.M A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches 6_______________________________________________________________________________________100010-51234-4-3-2-15ON-RESISTANCE vs. V X , V Y , V Z(DUAL SUPPLIES)V X , V Y , V Z (V)R O N (Ω)1005352515455565-5-1-2-4-312345ON-RESISTANCEvs. V X, V Y , V Z AND TEMPERATURE(DUAL SUPPLIES)V X , V Y , V Z (V)R O N (Ω)10,0001010234567891ON-RESISTANCE vs. V X , V Y , V Z(SINGLE SUPPLY)1001000V X , V Y , V Z (V)R O N (Ω)10705030901101302.01.50.5 1.0 2.53.0 3.54.0 4.55.0ON-RESISTANCEvs. V X , V Y , V Z AND TEMPERATURE(SINGLE SUPPLY)V X , V Y , V Z (V)R O N (Ω)0.01OFF-LEAKAGE vs. TEMPERATURE100TEMPERATURE (°C)O F F L E A K A G E (n A )10.110-5012525-25075501001ON-LEAKAGE vs. TEMPERATURE10,000100,000TEMPERATURE (°C)O N L E A K A G E (p A )100101000-5012525-2507550100-2.5-1.5-2.0-1.00.51.00-0.51.5CHARGE INJECTION vs. V X , V Y , V ZV X , V Y , V Z (V)Q (p C )Typical Operating Characteristics(V CC = 5V, V EE = -5V, GND = 0V, T A = +25°C, unless otherwise noted.)MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches_______________________________________________________________________________________70.01SUPPLY CURRENT vs. TEMPERATURE100TEMPERATURE (°C)I C C , I E E (n A )1010.1-5012525-25075501000-120-110-1000.1101001 FREQUENCY RESPONSE-90-80FREQUENCY (MHz)L O S S (d B )PHASE (DEGREES)-60-50-70-30-20-10-401000.01101k 10k100100kTOTAL HARMONIC DISTORTIONvs. FREQUENCY0.1FREQUENCY (Hz)T H D (%)110110-110-210-310-410-510-610-710-810-910-1010-110231465789111012V CC CURRENT vs. LOGIC LEVEL(V A , V B , V C , V ENABLE )V A , V B , V C , V ENABLEI C C (A )01.00.52.01.52.53.00234157689101112LOGIC-LEVEL THRESHOLD vs. V CCM A X 4581t o c 12V CC (V)V A , V B , V C , V E N A B L E (V )Typical Operating Characteristics (continued)(V CC = 5V, V EE = -5V, GND = 0V, T A = +25°C, unless otherwise noted.)M A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches 8_________________________________________________________________________________________________Applications InformationPower-Supply ConsiderationsOverviewThe MAX4581/MAX4582/MAX4583 construction is typi-cal of most CMOS analog switches. They have threesupply pins: V CC , V EE , and GND. V CC and V EE are used to drive the internal CMOS switches and set the limits of the analog voltage on any switch. Reverse ESD-protection diodes are internally connected between each analog-signal pin and both V CC and V EE . If any analog signal exceeds V CC or V EE , one of these diodesPin Descriptionin both directions.MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches_______________________________________________________________________________________9Table 1. Truth Table/Switch ProgrammingX = Don’t care*C not present on MAX4582.Note:Input and output pins are identical and interchangeable. Either may be considered an input or output; signals pass equallywell in either direction.will conduct. During normal operation, these and other reverse-biased ESD diodes leak, forming the only cur-rent drawn from V CC or V EE .Virtually all the analog leakage current comes from the ESD diodes. Although the ESD diodes on a given sig-nal pin are identical and therefore fairly well balanced,they are reverse biased differently. Each is biased by either V CC or V EE and the analog signal. This means their leakages will vary as the signal varies. The differ-ence in the two diode leakages to the V CC and V EE pins constitutes the analog-signal-path leakage current.All analog leakage current flows between each pin and one of the supply terminals, not to the other switch ter-minal. This is why both sides of a given switch canshow leakage currents of either the same or opposite polarity.There is no connection between the analog-signal paths and GND.V CC and G ND power the internal logic and logic-level translators, and set the input logic limits. The logic-level translators convert the logic levels into switched V CC and V EE signals to drive the gates of the analog sig-nals. This drive signal is the only connection between the logic supplies and signals and the analog supplies.V CC and V EE have ESD-protection diodes to GND.The logic-level thresholds are TTL/CMOS compatible when V CC is +5V. As V CC rises, the threshold increasesM A X 4581/M A X 4582/M A X 4583slightly, so when V CC reaches +12V the threshold is about 3.1V (above the TTL-guaranteed high-level mini-mum of 2.8V, but still compatible with CMOS outputs).Bipolar SuppliesThese devices operate with bipolar supplies between ±2V and ±5V. The V CC and V EE supplies need not be symmetrical, but their sum cannot exceed the +13V absolute maximum ratingSingle SupplyThese devices operate from a single supply between +2V and +12V when V EE is connected to G ND. All of the bipolar precautions must be observed. At room temperature, they actually “work ” with a single supply near or below +1.7V, although as supply voltage decreases, switch on-resistance and switching times become very high.Overvoltage ProtectionProper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maxi-mum ratings because stresses beyond the listed rat-ings can cause permanent damage to the devices.Always sequence V CC on first, then V EE , followed by the logic inputs and analog signals. If power-supply sequencing is not possible, add two small signal diodes (D1, D2) in series with the supply pins for overvoltage protection (Figure 1).Adding diodes reduces the analog-signal range to one diode drop below V CC and one diode drop above V EE ,but does not affect the devices ’ low switch resistance and low leakage characteristics. Device operation is unchanged, and the difference between V CC and V EE should not exceed 13V. These protection diodes are not recommended when using a single supply if signal levels must extend to ground.High-Frequency PerformanceIn 50Ωsystems, signal response is reasonably flat up to 50MHz (see Typical Operating Characteristics ).Above 20MHz, the on response has several minor peaks which are highly layout dependent. The problem is not turning the switch on, but turning it off. The off-state switch acts like a capacitor and passes higher frequencies with less attenuation. At 10MHz, off isola-tion is about -50dB in 50Ωsystems, becoming worse (approximately 20dB per decade) as frequency in-creases. Higher circuit impedances also degrade off isolation. Adjacent channel attenuation is about 3dB above that of a bare IC socket and is entirely due to capacitive coupling.Pin NomenclatureThe MAX4581/MAX4582/MAX4583 are pin-compatible with the industry-standard 74HC4051/74HC4052/74HC4053 and the MAX4051/MAX4052/MAX4053.They function identically and have identical logic dia-grams, although these parts differ electrically.The pin designations and logic diagrams in this data sheet conform to the original 1972 specifications pub-lished by RCA for the CD4051/CD4052/CD4053. These designations differ from the standard Maxim switch and mux designations as found all other Maxim data sheets (including the MAX4051/MAX4052/MAX4053) and may cause confusion. Designers who feel more comfortable with Maxim ’s standard designations are advised that the pin designations and logic diagrams on the MAX4051/MAX4052/MAX4053 data sheet may be freely applied to the MAX4581/MAX4582/MAX4583.Low-Voltage, CMOS Analog Multiplexers/Switches 10______________________________________________________________________________________Figure 1. Overvoltage Protection Using External Blocking DiodesMAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches______________________________________________________________________________________11Figure 2. Address Transition Times______________________________________________Test Circuits/Timing DiagramsM A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches 12______________________________________________________________________________________Figure 3. Inhibit Switching Times_________________________________Test Circuits/Timing Diagrams (continued)MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches______________________________________________________________________________________13Figure 4. Break-Before-Make IntervalFigure 5. Charge Injection_________________________________Test Circuits/Timing Diagrams (continued)M A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches14______________________________________________________________________________________Figure 6. Off Isolation, On Loss, and CrosstalkFigure 7. Capacitance _________________________________Test Circuits/Timing Diagrams (continued)MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches______________________________________________________________________________________15*Contact factory for availability.**EP = Exposed pad.Pin Configurations/Functional Diagrams (continued)____Chip Topographies (continued)TRANSISTOR COUNT: 219SUBSTRATE CONNECTED TO V+.Z1Z0EnableN.C.XV EEGND C BX1X0A0.053"(1.35mm)0.069"(1.75mm)MAX4583N.C. = NO CONNECTIONM A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches 16________________________________________________________________________________________________________________________________________________Chip TopographiesTRANSISTOR COUNT: 219SUBSTRATE CONNECTED TO V+.V EEGND C B0.053"(1.35mm)MAX4581TRANSISTOR COUNT: 219SUBSTRATE CONNECTED TO V+.V EEGND B N.C.0.053"(1.35mm)MAX4582MAX4581/MAX4582/MAX4583Low-Voltage, CMOS AnalogMultiplexers/Switches______________________________________________________________________________________17Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 4581/M A X 4582/M A X 4583Low-Voltage, CMOS Analog Multiplexers/Switches Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.18____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2007 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages.)Revision HistoryPages changed at Rev 5: 1, 8, 15, 16, 18。