| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | N74F640 | Octal bus transceiver, inverting 3-State | 87K |
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| 2 | N74F640 | Octal bus transceiver, inverting 3-State | 87K |
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| 3 | N74F640D | Octal bus transceiver, inverting 3-State | 87K |
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| 4 | N74F640DB | Single 8-Bit Inverting Bus Transceiver | 317K |
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| 5 | N74F640D-T | Single 8-Bit Inverting Bus Transceiver | 317K |
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| 6 | N74F640N | Octal bus transceiver, inverting 3-State | 87K |
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