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型号 / 厂家,封装,批号,备注,订购

DM74LS248 / National Semiconductor,Datasheet,06/07+,BCD to 7-Segment Dec 订购 PDF文档

DM74LS251N? / ,,最新批号,原装现货 订购 PDF文档

DM74LS253N? / ,,最新批号,原装现货 订购 PDF文档

DM74LS257A / MAT,DIPT,08/09+,正品原装货 订购 PDF文档

DM74LS257BCW / Fairchild Semiconductor,Datasheet,07+,3-STATE Quad 2-Data 订购 PDF文档

DM74LS197M / National Semiconductor,Datasheet,06/07+,4-Bit Binary Up Coun 订购 PDF文档

DM74LS258B / National Semiconductor,Datasheet,07+,TRI-STATE Quad 2-Dat 订购 PDF文档

DM74LS20N? / ,,最新批号,原装现货 订购 PDF文档

DM74LS240CW / Fairchild Semiconductor,Datasheet,07+,Octal 3-STATE Buffer 订购 PDF文档

DM74LS265A / National Semiconductor,Datasheet,07+,Hex TRI-STATE Buffer 订购 PDF文档