型号 / 厂家，封装，批号，备注，订购

SN74LS642NSRE4 / Texas Instruments,Datasheet,06/07+,Octal bus transceive 订购 PDF文档

SN74LS643-1N / TI,,08/09+,特价 订购 PDF文档

SN74LS644 / TI,,08/09+,原装010-62106431 订购 PDF文档

SN74LS644IN / TI,,08/09+,全新原装 订购 PDF文档

SN74LS644-IN / TI,DIP-20,08/09+,库房原装现货 订购 PDF文档

SN74LS644NT / ,,08/09+,现货特价 订购 PDF文档

SN74LS645 -1N / ,,08/09+,现货特价 订购 PDF文档

SN74LS645-1 / NORTEL,,08/09+,全新原装深圳库存 订购 PDF文档

SN74LS645-1DW / ,,08/09+,全新原装现货库存 订购 PDF文档

SN74LS645-1DWRE4 / Texas Instruments,Datasheet,06/07+,Octal bus transceive 订购 PDF文档