| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | HD74HC643 | Octal Bus Transceivers (with 3-state outputs) | 71K |
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| 2 | HD74HC643 | Octal Bus Transceivers (with 3-state outputs) | 143K |
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| 3 | HD74HC643FP | Bus Transceiver | 69K |
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| 4 | HD74HC643P | Bus Transceiver | 69K |
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| 5 | HD74HC643RP | Bus Transceiver | 69K |
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| 6 | HD74HC643RPEL | Octal Bus Transceivers (with 3-state outputs) | 143K |
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