型号 / 厂家，封装，批号，备注，订购

HD74LS221G / Hitachi Semiconductor,Datasheet,07+,Dual Monostable Mult 订购 PDF文档

HD74LS241FP / Renesas Technology,Datasheet,07+,Octal Buffers/Line D 订购 PDF文档

HD74LS240P陶 / ,,最新批号,原装现货 订购 PDF文档

HD74LS243 / Hitachi Semiconductor,Datasheet,07+,Quad. Bus Transceive 订购 PDF文档

HD74LS242FP / Renesas Technology,Datasheet,07+,Quad. Bus Transceive 订购 PDF文档

HD74LS245RPEL(PB FREE) / ,,,原装现货 订购 PDF文档

HD74LS245RP-RL / TI,SMD,08/09+,正品原装货 订购 PDF文档

HD74LS247RP / Hitachi Semiconductor,Datasheet,07+,Decoder/Demultiplexe 订购 PDF文档

HD74LS248G / Hitachi Semiconductor,Datasheet,06/07+,7-Segment Display Dr 订购 PDF文档

HD74LS249 / Hitachi Semiconductor,Datasheet,06/07+,BCD to Seven Segment 订购 PDF文档