型号 / 厂家，封装，批号，备注，订购

DM74LS251CW / Fairchild Semiconductor,Datasheet,07+,3-STATE 1-of-8 Line 订购 PDF文档

DM74LS256 / National Semiconductor,Datasheet,06/07+,Dual 4-Bit Addressab 订购 PDF文档

DM74LS256PC / NS,,08+,全新原装，特价热卖 订购 PDF文档

DM74LS257BN? / ,,最新批号,原装现货 订购 PDF文档

DM74LS353M / National Semiconductor,Datasheet,06/07+,Dual 4-Input Multipl 订购 PDF文档

DM74LS258 / National Semiconductor,Datasheet,06/07+,(DM74LS257 / DM74LS2 订购 PDF文档

DM74LS365AN(FAIRCHILD) / ,,最新批号,原装现货 订购 PDF文档

DM74LS366A / National Semiconductor,Datasheet,07+,Hex TRI-STATE Invert 订购 PDF文档

DM74LS366AW / National Semiconductor,Datasheet,07+,Inverting-Function B 订购 PDF文档

DM74LS259CW / Fairchild Semiconductor,Datasheet,07+,8-Bit Serial In to P 订购 PDF文档