| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74LVT640D | 3.3V Octal transceiver with direction pin; inverting 3-State | 96K |
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| 2 | 74LVT640DB | 3.3V Octal transceiver with direction pin; inverting 3-State | 96K |
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| 3 | 74LVT640DB-T | Single 8-Bit Inverting Bus Transceiver | 372K |
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| 4 | 74LVT640D-T | Single 8-Bit Inverting Bus Transceiver | 372K |
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