| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | DM74AS644N | 8-Bit Inverting/Non-Inverting Bus Trasceiver | 210K |
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| 2 | DM74AS644N/A+ | 8-Bit Inverting/Non-Inverting Bus Trasceiver | 210K |
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| 3 | DM74AS644N/B+ | 8-Bit Inverting/Non-Inverting Bus Trasceiver | 210K |
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