74HCT643

Octal bus transceiver; 3-state; true/inverting

GENERALDESCRIPTION The74HC/HCT643arehigh-speedSi-gateCMOSdevicesandarepincompatiblewithlowpowerSchottkyTTL(LSTTL).TheyarespecifiedincompliancewithJEDECstandardno.7A. FEATURES •Octalbidirectionalbusinterface •Trueandinverting3-stateoutputs •Outputcapabilit

HD74HCT643

OctalBusTransceivers(with3-stateoutputs)

Description BoththeHD74HCT640andtheHD74HCT643haveoneactivelowenableinput(G),andadirectioncontrol(DIR).WhentheDIRinputishigh,dataflowsfromtheAinputstotheBoutputs.WhenDIRislow,dataflowsfromBtoA. TheHD74HCT640transfersinverteddatafromonebustotheo

M74HCT643

OCTALBUSTRANSCEIVER3-STATE:HCT245NONINVERTINGHCT640INVERTING,HCT643INVERTING/NONINVERTING

DESCRIPTION TheM54/74HCT245,HCT640andHCT643utilisesilicongateC2MOStechnologytoachiveoperatingspeedseqivalenttoLSTTLdevices. ■HIGHSPEED tPD=10ns(TYP.)atVCC=5V ■LOWPOWERDISSIPATION ICC=4µA(MAX.)atTA=25°C ■COMPATIBLEWITHTTLOUTPUTS VIH

MM74HCT643

InvertingOctalTRI-STATETransceiver

MM74HCT643J

InvertingOctalTRI-STATETransceiver

MM74HCT643N

InvertingOctalTRI-STATETransceiver