| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | DM74LS393 | Dual 4-Bit Binary Counter | 57K |
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| 2 | DM74LS393M | Dual 4-Bit Binary Counter | 57K |
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| 3 | DM74LS393MX | Asynchronous Up/Down Counter | 57K |
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| 4 | DM74LS393N | Asynchronous Up/Down Counter | 86K |
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| 5 | DM74LS393N/A+ | Asynchronous Up/Down Counter | 86K |
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| 6 | DM74LS393N/B+ | Asynchronous Up/Down Counter | 86K |
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