| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | CD40193BCN | Synchronous 4-Bit Up/Down Decade Counter . Synchronous 4-Bit Up/Down Binary Counter | 76K |
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| 2 | CD40193BCN/A+ | Synchronous Up/Down Counter | 161K |
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| 3 | CD40193BCN/B+ | Synchronous Up/Down Counter | 161K |
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