| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | M74HCT688 | 8 BIT EQUALITY COMPARATOR | 248K |
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| 2 | M74HCT688B1R | 8 BIT EQUALITY COMPARATOR | 248K |
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| 3 | M74HCT688C1R | 8 BIT EQUALITY COMPARATOR | 248K |
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| 4 | M74HCT688M1R | 8 BIT EQUALITY COMPARATOR | 248K |
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