74151 TTL 8选1数据选择器

DM74150,DM74151AData Selectors/MultiplexersGeneral DescriptionThese data selectors/multiplexers contain full on-chip decod-ing to select the desired data source.The150selects one-of-sixteen data sources;the151A selects one-of-eight data sources.The150and151A have a strobe input which must be at a low logic level to enable these devices.A high level at the strobe forces the W output high and the Y output (as applicable)low.The151A features complementary W and Y outputs, whereas the150has an inverted(W)output only.The151A incorporates address buffers which have sym-metrical propagation delay times through the complementary paths.This reduces the possibility of transients occurring at the output(s)due to changes made at the select inputs,even when the151A outputs are enabled(i.e.,strobe low).Featuresn150selects one-of-sixteen data linesn151A selects one-of-eight data linesn Performs parallel-to-serial conversionn Permits multiplexing from N lines to one linen Also for use as Boolean function generatorn Typical average propagation delay time,data input to W output15011ns151A9nsn Typical power dissipation150200mW151A135mWn Alternate Military/Aerospace device(54150,54151A)is available.Contact a Fairchild Semiconductor SalesOffice/Distributor for specifications.Connection DiagramsDual-In-Line PackageDS006546-1 Order Number54150DQMB,54150FMQB,DM54150J or DM74150NSee Package Number J24A,N24A or W24CDual-In-Line PackageDS006546-2 Order Number54151ADMQB,54151AFMQB, DM54151AJ,DM54151AW or DM74151AN See Package Number J16A,N16E or W16AAbsolute Maximum Ratings(Note1)Supply Voltage7V Input Voltage 5.5V Operating Free Air Temperature RangeDM54and54−55˚C to+125˚C DM740˚C to+70˚C Storage Temperature Range−65˚C to+150˚CRecommended Operating ConditionsSymbol Parameter DM54150DM74150UnitsMin Nom Max Min Nom MaxV CC Supply Voltage 4.55 5.5 4.755 5.25VV IH High Level Input Voltage22VV IL Low Level Input Voltage0.80.8VI OH High Level Output Current−0.8−0.8mA I OL Low Level Output Current1616mA T A Free Air Operating Temperature−55125070˚C Note1:The“Absolute Maximum Ratings”are those values beyond which the safety of the device cannot be guaranteed.The device should not be operated at these limits.The parametric values defined in the“Electrical Characteristics”table are not guaranteed at the absolute maximum ratings.The“Recommended Operating Conditions”table will define the conditions for actual device operation.’150Electrical Characteristicsover recommended operating free air temperature range(unless otherwise noted)Symbol Parameter Conditions Min Typ Max Units(Note2)V I Input Clamp Voltage V CC=Min,I I=−12mA−1.5VV OH High Level Output V CC=Min,I OH=Max 2.4V Voltage V IL=Max,V IH=MinV OL Low Level Output V CC=Min,I OL=Max0.4V Voltage V IH=Min,V IL=MaxI I Input Current@Max V CC=Max,V I=5.5V1mAInput VoltageI IH High Level Input Current V CC=Max,V I=2.4V40µA I IL Low Level Input Current V CC=Max,V I=0.4V−1.6mA I OS Short Circuit V CC=Max DM54−20−55mAOutput Current(Note3)DM74−18−55I CC Supply Current V CC=Max,(Note4)4068mANote2:All typicals are at V CC=5V,T A=25˚C.Note3:Not more than one output should be shorted at a time.Note4:I CC is measured with the strobe and data select inputs at4.5V,all other inputs and outputs open.2’150Switching Characteristicsat V CC=5V and T A=25˚CSymbol Parameter From(Input)R L=400Ω,C L=15pF UnitsTo(Output)Min Maxt PLH Propagation Delay Time Select35ns Low to High Level Output to Wt PHL Propagation Delay Time Select33ns High to Low Level Output to Wt PLH Propagation Delay Time Strobe24ns Low to High Level Output to Wt PHL Propagation Delay Time Strobe30ns High to Low Level Output to Wt PLH Propagation Delay Time E0-E1520ns Low to High Level Output to Wt PHL Propagation Delay Time E0-E1514ns High to Low Level Output to WRecommended Operating ConditionsSymbol Parameter DM54151A DM74151A UnitsMin Nom Max Min Nom MaxV CC Supply Voltage 4.55 5.5 4.755 5.25VV IH High Level Input Voltage22VV IL Low Level Input Voltage0.80.8VI OH High Level Output Current−0.8−0.8mAI OL Low Level Output Current1616mAT A Free Air Operating Temperature−55125070˚C’151A Electrical Characteristicsover recommended operating free air temperature range(unless otherwise noted)Symbol Parameter Conditions Min Typ Max Units(Note5)V I Input Clamp Voltage V CC=Min,I I=−12mA−1.5VV OH High Level Output V CC=Min,I OH=Max 2.4V Voltage V IL=Max,V IH=MinV OL Low Level Output V CC=Min,I OL=Max0.4V Voltage V IH=Min,V IL=MaxI I Input Current@Max V CC=Max,V I=5.5V1mAInput VoltageI IH High Level Input Current V CC=Max,V I=2.4V40µAI IL Low Level Input Current V CC=Max,V I=0.4V−1.6mAI OS Short Circuit V CC=Max DM54−20−55mAOutput Current(Note6)DM74−18−55I CC Supply Current V CC=Max,(Note7)2748mANote5:All typicals are at V CC=5V,T A=25˚C.Note6:Not more than one output should be shorted at a time.Note7:I CC is measured with the strobe and data select inputs at4.5V,all other inputs and outputs open.’151A Switching Characteristicsat V CC=5V and T A=25˚CSymbol Parameter From(Input)R L=400Ω,C L=15pF UnitsTo(Output)Min Max t PLH Propagation Delay Time Select38ns Low to High Level Output(4Levels)to Yt PHL Propagation Delay Time Select30ns High to Low Level Output(4Levels)to Yt PLH Propagation Delay Time Select26ns Low to High Level Output(3Levels)to Wt PHL Propagation Delay Time Select30ns High to Low Level Output(3Levels)to Wt PLH Propagation Delay Time Strobe33ns Low to High Level Output to Yt PHL Propagation Delay Time Strobe30ns High to Low Level Output to Yt PLH Propagation Delay Time Strobe21ns Low to High Level Output to Wt PHL Propagation Delay Time Strobe25ns High to Low Level Output to Wt PLH Propagation Delay Time D0-D724ns Low to High Level Output to Yt PHL Propagation Delay Time D0-D724ns High to Low Level Output to Yt PLH Propagation Delay Time D0-D714ns Low to High Level Output to Wt PHL Propagation Delay Time D0-D714ns High to Low Level Output to W4Logic Diagrams150Logic Diagrams151ADS006546-4 See Address Buffers BelowAddress Buffers for54151A/74151A6Function Tables54150/74150Inputs OutputsSelect Strobe WD C B A SX X X X H HL L L L L E0L L L H L E1L L H L L E2L L H H L E3L H L L L E4L H L H L E5L H H L L E6L H H H L E7H L L L L E8H L L H L E9H L H L L E10H L H H L E11H H L L L E12H H L H L E13H H H L L E14H H H H L E15H=High Level,L=Low Level,X=Don’t CareE0,E1…E15=the complement of the level of the respective E input54151A/75151AInputs OutputsSelect Strobe Y WC B A SX X X H L HL L L L D0D0L L H L D1D1L H L L D2D2L H H L D3D3H L L L D4D4H L H L D5D5H H L L D6D6H H H L D7D7H=High Level,L=Low Level,X=Don’t CareD0,D1…D7=the level of the respective D input8Physical Dimensions inches(millimeters)unless otherwise noted24-Lead Ceramic Dual-In-Line Package(J)Order Number54150DMQB or DM54150JPackage Number J24APhysical Dimensions inches(millimeters)unless otherwise noted(Continued)16-Lead Molded Dual-In-Line Package(N)Order Number DM74151ANPackage Number N16E10Physical Dimensions inches(millimeters)unless otherwise noted(Continued)16-Lead Ceramic Flat Package(W)Order Number54151AFMQB or DM54151AWPackage Number W16A24-Lead Ceramic Flat Package(W)Order Number54150FMQBPackage Number W24CLIFE SUPPORT POLICYFAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DE-VICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMI-CONDUCTOR CORPORATION.As used herein:1.Life support devices or systems are devices or sys-tems which,(a)are intended for surgical implant intothe body,or (b)support or sustain life,and (c)whosefailure to perform when properly used in accordancewith instructions for use provided in the labeling,can be reasonably expected to result in a significant injury to the user.2.A critical component in any component of a life support device or system whose failure to perform can be rea-sonably expected to cause the failure of the life support device or system,or to affect its safety or effectiveness.Fairchild Semiconductor Corporation AmericasCustomer Response Center Tel:1-888-522-5372Fairchild Semiconductor EuropeFax:+49(0)180-5308586Email:europe.support@Deutsch Tel:+49(0)8141-35-0English Tel:+44(0)1793-85-68-56Italy Tel:+39(0)2575631Fairchild SemiconductorHong Kong Ltd.13th Floor,Straight Block,Ocean Centre,5Canton Rd.Tsimshatsui,Kowloon Hong KongTel:+8522737-7200Fax:+8522314-0061National Semiconductor Japan Ltd.Tel:81-3-5620-6175Fax:81-3-5620-6179D M 74150,D M 74151A D a t a S e l e c t o r s /M u l t i p l e x e r sFairchild does not assume any responsibility for use of any circuitry described,no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications.。