型号 / 厂家，封装，批号，备注，订购

74LS253W / Raytheon Electronics,Datasheet,07+,4-Line Digital Multi 订购 PDF文档

74LS255J / Raytheon Electronics,Datasheet,07+,4-Line Digital Demul 订购 PDF文档

74LS245M1 / SGS-Thomson,Datasheet,07+,Octal Bus Transceive 订购 PDF文档

74LS245SC (SMD) / ,,,原装现货 订购 PDF文档

74LS245SMD / ,,最新批号,原装现货 订购 PDF文档

74LS245W / ,,最新批号,现货库存 订购 PDF文档

74LS247DR2 / ,,最新批号,原装现货 订购 PDF文档

74LS256FC / Fairchild Semiconductor,Datasheet,07+,Dual 4-Bit D-Type La 订购 PDF文档

74LS247E / ,,最新批号,原装现货 订购 PDF文档

74LS248FC / Various,Datasheet,07+,7-Segment Display Dr 订购 PDF文档