SN74LS645-1N , SN74LS645-1N , SN74LS645-1N , SN74LS645-1 , SN74LS645 , SN74LS644-1N , SN74LS643N , SN74LS642N , SN74LS642-1N , SN74LS641NS , SN74LS641N , SN74LS641N , SN74LS641ML1 , SN74LS641ML1 , SN74LS641DWR , SN74LS641DW , SN74LS641-1N , SN74LS640P , SN74LS640NS , SN74LS640N , SN74LS640N , SN74LS640DWR , SN74LS640-1N , SN74LS640-1N , SN74LS640 , SN74LS63N , SN74LS639N , SN74LS639ANSR , SN74LS638N , SN74LS630N , SN74LS629P , SN74LS629N , SN74LS628N , SN74LS628N , SN74LS627N , SN74LS626N , SN74LS626 , SN74LS624N , SN74LS624A , SN74LS624 , SN74LS624 , SN74LS624 , SN74LS623N , SN74LS612N , SN74LS612N , SN74LS612N , SN74LS603N , SN74LS598N , SN74LS598DWR , SN74LS597N , SN74LS596N , SN74LS595NS , SN74LS595N , SN74LS594N , SN74LS593N , SN74LS592NS , SN74LS592N , SN74LS592 , SN74LS590DR , SN74LS579N , SN74LS574DWR , SN74LS574DWR , SN74LS574BN , SN74LS573DWR , SN74LS573DWR , SN74LS569N , SN74LS564N , SN74LS55NS , SN74LS55N , SN74LS54NS 中体 , SN74LS54NS , SN74LS54NS , SN74LS54N , SN74LS54N , SN74LS54N , SN74LS54N , SN74LS54N , SN74LS54MR 中体 , SN74LS54MR , SN74LS541NSR , SN74LS541NSLE , SN74LS541NSLE , SN74LS541NS , SN74LS541N , SN74LS541N , SN74LS541N , SN74LS541J , SN74LS541J , SN74LS541DWR , SN74LS541 , SN74LS645-1N
SN74LS645-1N
SN74LS645-1N
SN74LS645-1
SN74LS645
SN74LS644-1N
SN74LS643N
SN74LS642N
SN74LS642-1N
SN74LS641NS
SN74LS641N
SN74LS641N
SN74LS641ML1
SN74LS641ML1
SN74LS641DWR
SN74LS641DW
SN74LS641-1N
SN74LS640P
SN74LS640NS
SN74LS640N
SN74LS640N
SN74LS640DWR
SN74LS640-1N
SN74LS640-1N
SN74LS640
SN74LS63N
SN74LS639N
SN74LS639ANSR
SN74LS638N
SN74LS630N
SN74LS629P
SN74LS629N
SN74LS628N
SN74LS628N
SN74LS627N
SN74LS626N
SN74LS626
SN74LS624N
SN74LS624A
SN74LS624
SN74LS624
SN74LS624
SN74LS623N
SN74LS612N
SN74LS612N
SN74LS612N
SN74LS603N
SN74LS598N
SN74LS598DWR
SN74LS597N
SN74LS596N
SN74LS595NS
SN74LS595N
SN74LS594N
SN74LS593N
SN74LS592NS
SN74LS592N
SN74LS592
SN74LS590DR
SN74LS579N
SN74LS574DWR
SN74LS574DWR
SN74LS574BN
SN74LS573DWR
SN74LS573DWR
SN74LS569N
SN74LS564N
SN74LS55NS
SN74LS55N
SN74LS54NS 中体
SN74LS54NS
SN74LS54NS
SN74LS54N
SN74LS54N
SN74LS54N
SN74LS54N
SN74LS54N
SN74LS54MR 中体
SN74LS54MR
SN74LS541NSR
SN74LS541NSLE
SN74LS541NSLE
SN74LS541NS
SN74LS541N
SN74LS541N
SN74LS541N
SN74LS541J
SN74LS541J
SN74LS541DWR
SN74LS541