型号 / 厂家，封装，批号，备注，订购

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74HCT640D653 / NXP,,07+,全新原装现货 订购 PDF文档

74HCT640DB118 / NXP,,07+,全新原装现货 订购 PDF文档

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74HCT646D653 / NXP,,07+,全新原装现货 订购 PDF文档

74HCT646DB118 / NXP,,07+,全新原装现货 订购 PDF文档

74HCT646U / Philips Semiconductors,Datasheet,07+,Octal bus transceive 订购 PDF文档

74HCT648U / Philips Semiconductors,Datasheet,07+,Octal bus transceive 订购 PDF文档