| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | CD74HC640E | High-Speed CMOS Logic Octal Three-State Bus Transceiver, Inverting | 275K |
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| 2 | CD74HC640E | High-Speed CMOS Logic Octal Three-State Bus Transceiver, Inverting | 275K |
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| 3 | CD74HC640E | High-Speed CMOS Logic Octal Three-State Bus Transceiver, Inverting | 281K |
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| 4 | CD74HC640EE4 | High-Speed CMOS Logic Octal Three-State Bus Transceiver, Inverting | 281K |
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| 5 | CD74HC640EN | Logic IC | 583K |
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| 6 | CD74HC640EX | Bus Transceiver | 119K |
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