型号 / 厂家，封装，批号，备注，订购

SN54HC620FK / Texas Instruments,Datasheet,06/07+,Octal Bus-Line Trans 订购 PDF文档

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SN54HC646 / Texas Instruments,Datasheet,06/07+,OCTAL BUS TRANSCEIVE 订购 PDF文档

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SN54HC664 / Texas Instruments,Datasheet,06/07+,OCTAL BUS TRANSCELVE 订购 PDF文档