54FCT541中文资料

54FCT541Octal Buffer/Line Driver with TRI-STATE ®OutputsGeneral DescriptionThe ’FCT541is an octal buffer and line driver with TRI-STATE outputs designed to be employed as a memory and address driver,clock driver,or bus-oriented transmitter/receiver.The ’FCT541is similar to the ’FCT244with broad-side pinout.Featuresn Non-inverting buffersn TTL input and output level compatible n CMOS power consumptionnOutput sink capability of 48mA,source capability of 12mAn Flow-through pinout for ease of PC board layout n Standard Microcircuit Drawing (SMD)5962-8976601Ordering CodeMilitaryPackage Package DescriptionNumber 54FCT541DMQB J20A 20-Lead Ceramic Dual-In-Line 54FCT541FMQB W20A 20-Lead Cerpack54FCT541LMQBE20A20-Lead Ceramic Leadless Chip Carrier,Type CConnection DiagramPin Names DescriptionOE 1,OE 2Output Enable Input (Active Low)I 0–I 7Inputs O 0–O 7Outputs Inputs Outputs OE 1OE 2I FCT541L L H H H X X Z X H X Z LLLLH =HIGH Voltage Level L =LOW Voltage Level X =ImmaterialZ =High ImpedanceTRI-STATE ®is a registered trademark of FAirchild Semiconductor Corporation.Pin Assignment DIP and CerpackDS100953-1Pin AssignmentLCCDS100953-30October 199954FCT541Octal Buffer/Line Driver with TRI-STATE Outputs©1999National Semiconductor Corporation Absolute Maximum Ratings (Note 1)If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distributors for availability and specifications.Storage Temperature−65˚C to +150˚C Ambient Temperature under Bias −55˚C to +125˚C Junction Temperature under Bias Ceramic−55˚C to +175˚C V CC Pin Potential to Ground Pin−0.5V to +7.0V Input Voltage (Note 2)−0.5V to +7.0V Input Current (Note 2)−30mA to +5.0mAVoltage Applied to Any Output in the Disabled or Power-Off State−0.5V to 5.5Vin the HIGH State−0.5V to V CCCurrent Applied to Output in LOW State (Max)twice the rated I OL (mA)DC Latchup Source Current−500mARecommended Operating ConditionsFree Air Ambient Temperature Military−55˚C to +125˚C Supply Voltage Military+4.5V to +5.5VMinimum Input Edge Rate (∆V/∆t)Data Input 50mV/ns Enable Input20mV/nsDC Electrical CharacteristicsSymbol ParameterFCT541UnitsV CCConditionsMinTypMaxV IH Input HIGH Voltage 2.0V Recognized HIGH Signal V IL Input LOW Voltage 0.8V Recognized LOW Signal V CD Input Clamp Diode Voltage −1.2V Min I IN =−18mA V OH Output HIGH Voltage 54FCT 4.3V Min I OH =−300µA 54FCT 2.4V Min I OH =−12mA V OL Output LOW Voltage 54FCT 0.2V Min I OL =300µA 54FCT0.55V Min I OL =48mA I IH Input HIGH Current 5µA Max V IN =V CCI IL Input LOW Current −5µA Max V IN =0.0VI OZH Output Leakage Current 10µA Max V OUT =5.5V;OE n =2.0V I OZL Output Leakage Current −10µA Max V OUT =0.0V;OE n =2.0V I OS Output Short-Circuit Current -60mA Max V OUT =0.0VI CCQ Quiescent Power Supply Current 1.5mA Max V IN <0.2V or V IN 5.3V,V CC =5.5V∆I CC Quiescent Power Supply Current 2.0mA Max V I =V CC −2.1VI CCDDynamic I CC0.4mA/MHz MaxV CC =5.5V,Outputs Open,One Bit Toggling,50%Duty Cycle,OE n =GNDI CCTotal Power Supply Current6.0mAMaxV CC =5.5V,Outputs Open,fI =10MHz,OE n =GND,One Bit Toggling,50%Duty Cycle,OE n =GNDNote 1:Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired.Functional operation under these conditions is not implied.Note 2:Either voltage limit or current limit is sufficient to protect inputs.54F C T 541 2AC Electrical Characteristics54FCTT A=−55˚C to+125˚C Fig. Symbol Parameter V CC=4.5V–5.5V Units No.C L=50pFMin Maxt PLH Propagation Delay 2.09.0ns Figure4t PHL Data to Outputs 2.09.0t PZH Output Enable Time 2.012.5ns Figure5t PZL 2.012.5t PHZ Output Disable Time 2.012.5ns Figure5t PLZ 2.012.5CapacitanceSymbol Parameter Max Units ConditionsT A=25˚CC IN Input Capacitance10.0pF V CC=0.0VC OUT(Note3)Output Capacitance12.0pF V CC=5.0VNote3:C OUT is measured at frequency of f=1MHz,per MIL-STD-883B,Method3012.54FCT5413AC LoadingAC WaveformsDS100953-3*Includes jig and probe capacitanceFIGURE 1.Standard AC Test LoadDS100953-4FIGURE 2.Test Input Signal LevelsAmplitude Rep.Rate t w t r t f 3.0V1MHz500ns2.5ns2.5nsFIGURE 3.Test Input Signal RequirementsDS100953-5FIGURE 4.Propagation Delay Waveforms forInverting and Non-Inverting FunctionsDS100953-7FIGURE 5.TRI-STATE Output HIGH and LOWEnable and Disable Time54F C T 541 4Physical Dimensionsinches (millimeters)unless otherwise noted20-Terminal Ceramic Chip CarrierNS Package Number E20A20-Lead Ceramic Dual-In-Line PackageNS Package Number J20A54FCT5415Physical Dimensions inches(millimeters)unless otherwise noted(Continued)LIFE SUPPORT POLICYNATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION.As used herein:1.Life support devices or systems are devices orsystems which,(a)are intended for surgical implantinto the body,or(b)support or sustain life,andwhose failure to perform when properly used inaccordance with instructions for use provided in thelabeling,can be reasonably expected to result in asignificant injury to the user.2.A critical component is any component of a lifesupport device or system whose failure to performcan be reasonably expected to cause the failure ofthe life support device or system,or to affect itssafety or effectiveness.National SemiconductorCorporationAmericasTel:1-800-272-9959Fax:1-800-737-7018Email:support@National SemiconductorEuropeFax:+49(0)180-5308586Email:europe.support@Deutsch Tel:+49(0)180-5308585English Tel:+49(0)180-5327832Français Tel:+49(0)180-5329358Italiano Tel:+49(0)180-5341680National SemiconductorAsia Pacific CustomerResponse GroupTel:65-2544466Fax:65-2504466Email:sea.support@National SemiconductorJapan Ltd.Tel:81-3-5639-7560Fax:81-3-5639-7507 20-Lead Ceramic FlatpackNS Package Number W20A54FCT541OctalBuffer/LineDriverwithTRI-STATEOutputsNational does not assume any responsibility for use of any circuitry described,no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.。