| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | HC4P5502B1-5 | SLIC Subscriber Line Interface Circuit | 136K |
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| 2 | HC4P5502B-5 | EIA/ITU PABX SLIC with 30mA Loop Feed | 86K |
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| 3 | HC4P5502B-5 | EIA/ITU PABX SLIC with 30mA Loop Feed | 617K |
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