全新原装 SN74S157NSRG4 SN74S157NSRE4 SN74S157NSR SN74S157DG4

原【只有】74S04NSR 74S112PC 74S113PC 74S133DR 74S157DC原装

逻辑芯片SN74S157NSR SN74S157 sn74s157nsr SOP-16