型号 / 厂家，封装，批号，备注，订购

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TC74AC161FN-ELP / Toshiba,Datasheet,07+,../Shift Regist 订购 PDF文档

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TC74AC253F / Toshiba,Datasheet,07+,4-Line Digital Multi 订购 PDF文档

TC74AC253FN / Toshiba,Datasheet,06/07+,4-Line Digital Multi 订购 PDF文档

TC74AC258P / Toshiba,Datasheet,06/07+,2-Line Digital Multi 订购 PDF文档