| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | M74HC74B1R | DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR | 256K |
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| 2 | M74HC74B1R | DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR | 464K |
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| 3 | M74HC74B1R | DUAL D TYPE FLIP FLOP WITH PRESET AND CLEAR | 256K |
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