全新SN74ALS540NS SN74ALS540DW SN74ALS534AN SN74ALS533DW

全新SN74ALS533AN SN74ALS521NS SN74ALS521DW SN74ALS520FN

UCC28515DWR UCC28516DWR SN64BCT245DW SN74ALS533ADW

SN74ALS27ADRE4/SN74AC533DW/SN74AHC541PWRE4

SN74ALS533ANSR/SN74AUP1G80YZPR/SN74ALS990DW

SN74ABT540DW/SN74ALS533ADW/SN74AC240PW

SN74AHC541PWRE4/SN74AC533DW/SN74ALS27ADRE4

SN74ALS990DW/SN74AUP1G80YZPR/SN74ALS533ANSR

SN74ALS533ADW/SN74AC240PW/SN74ABT540DW

SN74AC533DW SN74ALS27ADRE4 SN74AHC541PWRE4

SN74ALS990DW SN74AUP1G80YZPR SN74ALS533ANSR

SN74ABT540DW SN74ALS533ADW SN74AC240PW