| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | M54HC393 | M54HC390F1R M74HC390M1R M74HC390B1R M74HC390C1R | 262K |
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| 2 | M54HC393 | RAD-HARD DUAL BINARY COUNTER | 339K |
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| 3 | M54HC393_04 | RAD-HARD DUAL BINARY COUNTER | 339K |
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| 4 | M54HC393F1R | M54HC390F1R M74HC390M1R M74HC390B1R M74HC390C1R | 262K |
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