| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | N74F649D | Octal transceiver/register, non-inverting open-collector | 118K |
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| 2 | N74F649DB | Single 8-Bit Inverting Bus Transceiver | 565K |
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| 3 | N74F649D-T | Single 8-Bit Inverting Bus Transceiver | 565K |
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