型号 / 厂家，封装，批号，备注，订购

DM74AS640 / Fairchild Semiconductor,Datasheet,07+,3-STATE Octal Bus Tr 订购 PDF文档

DM74AS640M / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS641N / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS642J / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS644J / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS645J / National Semiconductor,Datasheet,06/07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS646N / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS648 / Fairchild Semiconductor,Datasheet,07+,Octal Bus Transceive 订购 PDF文档

DM74AS648J / National Semiconductor,Datasheet,06/07+,Octal Bus-Line Trans 订购 PDF文档

DM74AS648N / National Semiconductor,Datasheet,07+,Octal Bus-Line Trans 订购 PDF文档