Dual2-to-4-lineDecoders/Demultiplexers

Description TheHD74HC139containstwoindependenttwo-to-four-linedecoderseachwithasingleactivelowenableinput(1Gor2G).Dataontheslectinputs(1Aand1Bor2Aand2B)causeoneofthefournormallyhighoutputstogolow. Features •HighSpeedOperation:tpd(A,BtoY,4levels)

Dual2-to-4-lineDecoders/Demultiplexers

Description TheHD74HC139containstwoindependenttwo-to-four-linedecoderseachwithasingleactivelowenableinput(1Gor2G).Dataontheslectinputs(1Aand1Bor2Aand2B)causeoneofthefournormallyhighoutputstogolow. Features •HighSpeedOperation:tpd(A,BtoY,4levels)

Dual2-to-4linedecoder/demultiplexer

1.Generaldescription The74HC139;74HCT139decodestwobinaryweightedaddressinputs(nA0,nA1)tofourmutually exclusiveoutputs(nY0tonY3).Eachdecoderfeaturesanenableinput(nE).WhennEisHIGHall outputsareforcedHIGH.Theenableinputcanbeusedasthedatainputfora1-to-

HighSpeedCMOSLogic

Features OutputDriveCapability:10LSTTLLoads LowInputCurrent:1μA OutputsdirectlyinterfaceCMOS,NMOSandTTL OperatingVoltageRange:2Vto6V CMOSHighNoiseImmunity Functioncompatiblewith74LS139.

Dual2-to-4linedecoder/demultiplexer

GENERALDESCRIPTION The74HC/HCT139arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).ItisspecifiedincompliancewithJEDECstandardno.7A. The74HC/HCT139arehigh-speed,dual2-to-4linedecoder/multiplexers.Thisdevicehastwoindependentdec

HighSpeedCMOSLogic

文件：641.19 Kbytes Page：6 Pages

HighSpeedCMOSLogic

文件：696.19 Kbytes Page：6 Pages