型号 / 厂家，封装，批号，备注，订购

74AC257LC / Various,Datasheet,07+,2-Line Digital Multi 订购 PDF文档

74AC257M-R / ,,最新批号,原装现货 订购 PDF文档

74AC257PC_F091 / FSC,,07+,全新原装热卖 订购 PDF文档

74AC257PCQR / Various,Datasheet,07+,2-Line Digital Multi 订购 PDF文档

74AC257PCX / Fairchild Semiconductor,Datasheet,07+,IC MULTIPLEXER QUAD 订购 PDF文档

74AC257SC. / NATIONAL SEMICONDUCTOR,,08/09+,全新原装深圳库存 订购 PDF文档

74AC257SC_NL / FSC,,07+,全新原装热卖 订购 PDF文档

74AC257SCX_NL / Fairchild Semiconductor,Datasheet,07+,Quad 2-Input Multipl 订购 PDF文档

74AC253PCX / Fairchild Semiconductor,Datasheet,07+,IC MULTIPLEXER DUAL 订购 PDF文档

74AC253SC. / NATIONAL SEMICONDUCTOR,,08/09+,全新原装深圳库存 订购 PDF文档