54F157ADM资料

54F󰁋74F157AQuad2-InputMultiplexerNovember1994

54F󰁋74F157A

Quad2-InputMultiplexer

GeneralDescription

The’F157Aisahigh-speedquad2-inputmultiplexer󰀟FourbitsofdatafromtwosourcescanbeselectedusingthecommonSelectandEnableinputs󰀟Thefouroutputspresenttheselecteddatainthetrue(non-inverted)form󰀟The’F157Acanalsobeusedtogenerateanyfourofthe16differentfunctionstotwovariables󰀟

Features

Y

Guaranteed4000VminimumESDprotection

Commercial74F157APC

Military

PackageNumberN16E

PackageDescription

16-Lead(0󰀟300󰀁Wide)MoldedDual-In-Line16-LeadCeramicDual-In-Line

16-Lead(0󰀟150󰀁Wide)MoldedSmallOutline󰀷JEDEC16-Lead(0󰀟300󰀁Wide)MoldedSmallOutline󰀷EIAJ16-LeadCerpack

20-LeadCeramicLeadlessChipCarrier󰀷TypeC

54F157ADM(Note2)

74F157ASC(Note1)74F157ASJ(Note1)

54F157AFM(Note2)54F157ALM(Note2)

J16AM16AM16DW16AE20A

Note1󰀌Devicesalsoavailablein13󰀁reel󰀟UsesuffixeSCXandSJX󰀟

Note2󰀌Militarygradedevicewithenvironmentalandburn-inprocessing󰀟UsesuffixeDMQB󰀷FMQBandLMQB󰀟

LogicSymbolsConnectionDiagrams

PinAssignment

forDIP󰀷SOICandFlatpak

PinAssignment

forLCC

TL󰁋F󰁋9483–3

IEEE󰁋IEC

TL󰁋F󰁋9483–1

TL󰁋F󰁋9483–2

TL󰁋F󰁋9483–5

TRI-STATE󰀃isaregisteredtrademarkofNationalSemiconductorCorporation󰀟C1995NationalSemiconductorCorporation

TL󰁋F󰁋9483

RRD-B30M75󰁋PrintedinU󰀟S󰀟A󰀟

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UnitLoading󰁋FanOut

54F󰁋74F

PinNamesI0a–I0dI1a–I1dES

Za–Zd

Description

Source0DataInputsSource1DataInputs

EnableInput(ActiveLOW)SelectInputOutputs

U󰀟L󰀟HIGH󰁋LOW1󰀟0󰁋1󰀟01󰀟0󰁋1󰀟01󰀟0󰁋1󰀟01󰀟0󰁋1󰀟050󰁋33󰀟3

InputIIH󰁋IILOutputIOH󰁋IOL20mA󰁋b0󰀟6mA20mA󰁋b0󰀟6mA20mA󰁋b0󰀟6mA20mA󰁋b0󰀟6mAb1mA󰁋20mA

FunctionalDescription

The’F157Aisaquad2-inputmultiplexer󰀟ItselectsfourbitsofdatafromtwosourcesunderthecontrolofacommonSelectinput(S)󰀟TheEnableinput(E)isactiveLOW󰀟WhenEisHIGH󰀷alloftheoutputs(Z)areforcedLOWregardlessofallotherinputs󰀟The’F157Aisthelogicimplementationofa4-pole󰀷2-positionswitchwherethepositionoftheswitchisdeterminedbythelogiclevelssuppliedtotheSelectin-put󰀟Thelogicequationsfortheoutputsareshownbelow󰀌

ZneE󰀣(I1nSaI0nS)Acommonuseofthe’F157Aisthemovingofdatafromtwogroupsofregisterstofourcommonoutputbusses󰀟Thepar-ticularregisterfromwhichthedatacomesisdeterminedbythestateoftheSelectinput󰀟Alessobvioususeisasafunctiongenerator󰀟The’F157Acangenerateanyfourofthe

16differentfunctionsoftwovariableswithonevariablecommon󰀟Thisisusefulforimplementinghighlyirregularlogic󰀟

TruthTable

Inputs

EHLLLL

SXHHLL

I0XXXLH

I1XLHXX

OutputZLLHLH

HeHIGHVoltageLevelLeLOWVoltageLevelXeImmaterial

LogicDiagram

TL󰁋F󰁋9483–4

Pleasenotethatthisdiagramisprovidedonlyfortheunderstandingoflogicoperationsandshouldnotbeusedtoestimatepropagationdelays󰀟

2

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AbsoluteMaximumRatings(Note1)

IfMilitary󰁋Aerospacespecifieddevicesarerequired󰀷pleasecontacttheNationalSemiconductorSalesOffice󰁋Distributorsforavailabilityandspecifications󰀟StorageTemperature

AmbientTemperatureunderBiasJunctionTemperatureunderBiasPlasticVCCPinPotentialtoGroundPin

b65󰀄Ctoa150󰀄Cb55󰀄Ctoa125󰀄Cb55󰀄Ctoa175󰀄Cb55󰀄Ctoa150󰀄Cb0󰀟5Vtoa7󰀟0V

RecommendedOperatingConditions

FreeAirAmbientTemperatureMilitary

CommercialSupplyVoltageMilitary

Commercial

b55󰀄Ctoa125󰀄C

0󰀄Ctoa70󰀄Ca4󰀟5Vtoa5󰀟5Va4󰀟5Vtoa5󰀟5V

b0󰀟5Vtoa7󰀟0VInputVoltage(Note2)

b30mAtoa5󰀟0mAInputCurrent(Note2)

VoltageAppliedtoOutput

inHIGHState(withVCCe0V)

b0󰀟5VtoVCCStandardOutput

bTRI-STATE󰀃Output0󰀟5Vtoa5󰀟5V

CurrentAppliedtoOutputinLOWState(Max)twicetheratedIOL(mA)

ESDLastPassingVoltage(Min)4000V

Note1󰀌Absolutemaximumratingsarevaluesbeyondwhichthedevicemaybedamagedorhaveitsusefullifeimpaired󰀟Functionaloperationundertheseconditionsisnotimplied󰀟

Note2󰀌Eithervoltagelimitorcurrentlimitissufficienttoprotectinputs󰀟

DCElectricalCharacteristics

SymbolVIHVILVCDVOH

Parameter

Min

InputHIGHVoltageInputLOWVoltageInputClampDiodeVoltageOutputHIGHVoltageOutputLOWVoltageInputHIGHCurrent

InputHIGHCurrentBreakdownTestOutputHIGHLeakageCurrentInputLeakageTest

OutputLeakageCircuitCurrentInputLOWCurrent

OutputShort-CircuitCurrentPowerSupplyCurrentPowerSupplyCurrent

b60

54F󰁋74FTyp

Max

UnitsV

0󰀟8

b1󰀟2

VCC

Conditions

RecognizedasaHIGHSignalRecognizedasaLOWSignal

2󰀟0

VVV

MinMin

IINeb18mAIOHeb1mAIOHeb1mAIOHeb1mAIOLe20mAIOLe20mAVINe2󰀟7VVINe7󰀟0VVOUTeVCC

IIDe1󰀟9mA

AllOtherPinsGroundedVIODe150mV

AllOtherPinsGroundedVINe0󰀟5VVOUTe0VVOeHIGHVOeLOW

54F10%VCC74F10%VCC74F5%VCC54F10%VCC74F10%VCC54F74F54F74F54F74F74F74F

2󰀟52󰀟52󰀟7

0󰀟50󰀟520󰀟05󰀟01007󰀟025050

4󰀟75

3󰀟75

b0󰀟6b150

VOLIIHIBVIICEXVIDIODIILIOSICCHICCL

VmAmAmAVmAmAmAmAmA

MinMaxMaxMax0󰀟00󰀟0MaxMaxMaxMax

1515

2323

3

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ACElectricalCharacteristics

74F

Symbol

Parameter

Min

tPLHtPHLtPLHtPHLtPLHtPHL

PropagationDelayStoZn

PropagationDelayEtoZn

PropagationDelayIntoZn

4󰀟03󰀟05󰀟02󰀟52󰀟52󰀟5

TAea25󰀄CVCCea5󰀟0VCLe50pF

Typ7󰀟05󰀟07󰀟04󰀟54󰀟54󰀟0

Max10󰀟07󰀟09󰀟56󰀟56󰀟05󰀟5

54FTA󰀷VCCeMilCLe50pFMin4󰀟03󰀟05󰀟02󰀟52󰀟51󰀟5

Max12󰀟09󰀟013󰀟07󰀟57󰀟57󰀟5

74FTA󰀷VCCeComCLe50pFMin4󰀟03󰀟05󰀟02󰀟52󰀟52󰀟0

Max11󰀟08󰀟011󰀟07󰀟06󰀟57󰀟0

nsnsnsUnits

OrderingInformation

Thedevicenumberisusedtoformpartofasimplifiedpurchasingcodewherethepackagetypeandtemperaturerangearedefinedasfollows󰀌

74F

TemperatureRangeFamily74FeCommercial54FeMilitaryDeviceType

PackageCode

PePlasticDIPDeCeramicDIPFeFlatpak

LeLeadlessChipCarrier(LCC)SeSmallOutlineSOICJEDECSJeSmallOutlineSOICEIAJ

157A

S

C

X

SpecialVariations

QBeMilitarygradedevicewith

environmentalandburn-inprocessing

XeDevicesshippedin13󰀁reelTemperatureRange

CeCommercial(0󰀄Ctoa70󰀄C)MeMilitary(b55󰀄Ctoa125󰀄C)

4

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PhysicalDimensionsinches(millimeters)

20-LeadCeramicLeadlessChipCarrier(L)

NSPackageNumberE20A

16-LeadCeramicDualIn-LinePackage(D)

NSPackageNumberJ16A

5

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PhysicalDimensionsinches(millimeters)(Continued)

16-Lead(0󰀟150󰀁Wide)MoldedSmallOutlinePackage󰀷JEDEC(S)

NSPackageNumberM16A

6

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PhysicalDimensionsinches(millimeters)(Continued)

16-Lead(0󰀟300󰀁Wide)MoldedSmallOutlinePackage󰀷EIAJ(SJ)

NSPackageNumberM16D

16-Lead(0󰀟300󰀁Wide)MoldedDualIn-LinePackage(P)

NSPackageNumberN16E

7

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54F󰁋74F157AQuad2-InputMultiplexerPhysicalDimensionsinches(millimeters)(Continued)

16-LeadCeramicFlatpak(F)NSPackageNumberW16A

LIFESUPPORTPOLICY

NATIONAL’SPRODUCTSARENOTAUTHORIZEDFORUSEASCRITICALCOMPONENTSINLIFESUPPORTDEVICESORSYSTEMSWITHOUTTHEEXPRESSWRITTENAPPROVALOFTHEPRESIDENTOFNATIONALSEMICONDUCTORCORPORATION󰀟Asusedherein󰀌1󰀟Lifesupportdevicesorsystemsaredevicesorsystemswhich󰀷(a)areintendedforsurgicalimplantintothebody󰀷or(b)supportorsustainlife󰀷andwhosefailuretoperform󰀷whenproperlyusedinaccordancewithinstructionsforuseprovidedinthelabeling󰀷canbereasonablyexpectedtoresultinasignificantinjurytotheuser󰀟

NationalSemiconductorCorporation2900SemiconductorDriveNationalSemiconductorGmbHLivry-Gargan-Str󰀟10NationalSemiconductorJapanLtd󰀟SumitomoChemical2󰀟Acriticalcomponentisanycomponentofalifesupportdeviceorsystemwhosefailuretoperformcanbereasonablyexpectedtocausethefailureofthelifesupportdeviceorsystem󰀷ortoaffectitssafetyoreffectiveness󰀟

NationalSemiconductorHongKongLtd󰀟13thFloor󰀷StraightBlock󰀷NationalSemiconductoresDoBrazilLtda󰀟RueDeputadoLacordaFrancoNationalSemiconductor(Australia)Pty󰀷Ltd󰀟Building16