DECADE,DIVIDE-BY-TWELVEANDBINARYCOUNTERS

文件：1.3099 Mbytes Page：24 Pages

DecadeandBinaryCounters

GeneralDescription Eachofthesemonolithiccounterscontainsfourmasterslaveflip-flopsandadditionalgatingtoprovideadivide-by twocounterandathree-stagebinarycounterforwhichthecountcyclelengthisdivide-by-fivefortheDM74LS90. Features ■Typicalpowerdissipati

The’90isa4-stageripplecountercontainingahighspeedflip-flopactingasadivide-by-twoandthreeflip-flopsconnectedasadivideby-fivecounter.

DESCRIPTION—The’90isa4-stageripplecountercontainingahighspeed flip-flopactingasadivide-by-twoandthreeflip-flopsconnectedasadivideby- fivecounter.ItcanbeconnectedtooperatewithaconventionalBCDoutput patternoritcanbeconnectedtoprovidea50dutycycleoutpu

4-BITBINARYCOUNTER

TheSN54/74LS90,SN54/74LS92andSN54/74LS93arehigh-speed4-bitrippletypecounterspartitionedintotwosections.Eachcounterhasadivide-by-twosectionandeitheradivide-by-five(LS90),divide-by-six(LS92)ordivide-by-eight(LS93)sectionwhicharetriggeredbyaHIGH-to-LOWtrans

DECADECOUNTER;DIVIDE-BY-TWELVECOUNTER;4-BITBINARYCOUNTER

文件：109.48 Kbytes Page：6 Pages

DecadeandBinaryCounters

文件：131.84 Kbytes Page：10 Pages