| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | DM74LS244N | Octal 3-STATE Buffer/Line Driver/Line Receiver | 67K |
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| 2 | DM74LS244N | Octal TRI-STATEE Buffers/Line Drivers/Line Receivers | 142K |
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| 3 | DM74LS244N/A+ | Dual 4-Bit Non-Inverting Buffer/Driver | 90K |
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| 4 | DM74LS244N/B+ | Dual 4-Bit Non-Inverting Buffer/Driver | 90K |
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