型号 / 厂家，封装，批号，备注，订购

7492DN / TI,,89+,010-62106431 订购 PDF文档

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7493A / Fairchild Semiconductor,Datasheet,07+,Full Line Condensed 订购 PDF文档

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7493APC / Various,Datasheet,07+,4-Bit Binary Up Coun 订购 PDF文档

7493N / ,,02+,原装现货 订购 PDF文档

7493PC / FC,,,特价 订购 PDF文档

7494N / SIGN,,06+,全新原装国内外现货 订购 PDF文档