| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MC74AC4040N | 12-STAGE BINARY RIPPLE COUNTER | 122K |
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| 2 | MC74AC4040N | 12-STAGE BINARY RIPPLE COUNTER | 139K |
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| 3 | MC74AC4040N | 12−Stage Binary Ripple Counter | 86K |
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| 4 | MC74AC4040NG | 12−Stage Binary Ripple Counter | 86K |
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