| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74AC161SC | Synchronous Presettable Binary Counter | 118K |
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| 2 | 74AC161SC | Synchronous Presettable Binary Counter | 159K |
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| 3 | 74AC161SCQR | Synchronous Up Counter | 310K |
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| 4 | 74AC161SCX | Synchronous Up Counter | 118K |
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