型号 / 厂家，封装，批号，备注，订购

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SN74LS241MR / ,,最新批号,原装现货 订购 PDF文档

SN74LS242DR / ,Datasheet,06/07+,Quad Bus Transceiver 订购 PDF文档

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SN74LS242FN / Texas Instruments,Datasheet,06/07+,Quad Bus-Line Transc 订购 PDF文档

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SN74LS245-D / On Semiconductor,Datasheet,07+,Octal Bus Transceive 订购 PDF文档