| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MC74AC646DWR | Octal Transceiver/Register with 3−State Outputs (Non−inverting) | 165K |
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| 2 | MC74AC646DWR2 | OCTAL TRANSCEIVER/REGISTER WITH 3-STATE OUTPUTS (NON-INVERTING) | 84K |
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