| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MC74F657AN | OCTAL BIDIRECTIONAL TRANSCEIVER WITH 8-BIT PARITY GENERATOR CHECKER (3-STATE OUTPUTS) | 127K |
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| 2 | MC74F657AN/BN | OCTAL BIDIRECTIONAL TRANSCEIVER WITH 8-BIT PARITY GENERATOR CHECKER (3-STATE OUTPUTS) | 218K |
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