型号 / 厂家，封装，批号，备注，订购

DM74AS244N / NATIONAL SEMICONDUCTOR,,,原装现货 订购 PDF文档

DM74AS245SJ / Fairchild Semiconductor,Datasheet,06/07+,Octal Bus Transceive 订购 PDF文档

DM74AS245WM / FAIRCHILD,,05+,全新原装 订购 PDF文档

DM74AS257BN / ,,0710+,原装库房现货 订购 PDF文档

DM74AS257MX / NATIONAL SEMICONDUCTOR,,,原装现货 订购 PDF文档

DM74AS257N / NATIONAL SEMICONDUCTOR,,,原装现货 订购 PDF文档

DM74AS257SJ / NATIONAL SEMICONDUCTOR,,,原装现货 订购 PDF文档

DM74AS257SJ_Q / ,,,原装现货 订购 PDF文档

DM74AS257SJX / FSC,,04+原装,010-62106431 订购 PDF文档

DM74AS258J / ,,05+/06+,原装现货库存 订购 PDF文档