| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MC145406D | EIA-232-D/V.28 driver/receiver | 92K |
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| 2 | MC145406DW | Driver/Receiver(EIA 232-E and CCITT V.28(Formerly RS-232-D) | 158K |
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| 3 | MC145406DW | Driver/Receiver EIA 232-E and CCITT V.28 (Formerly RS-232-D) | 778K |
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