| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | HEF4720B | 256-bit, 1-bit per word random access memories | 184K |
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| 2 | HEF4720BD | 256-bit, 1-bit per word random access memories | 184K |
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| 3 | HEF4720BF | 256-bit, 1-bit per word random access memories | 184K |
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| 4 | HEF4720BN | 256-bit, 1-bit per word random access memories | 184K |
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| 5 | HEF4720BP | 256-bit, 1-bit per word random access memories | 184K |
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| 6 | HEF4720BT | 256-bit, 1-bit per word random access memories | 184K |
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