| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | TC74HC191AP | COMS DIGITAL INTERATED CIRCUIT SILICON MONOLITHIC | 346K |
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| 2 | TC74HC191AP | 4-Bit Binary Up/Down Counter | 452K |
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| 3 | TC74HC191AP_07 | 4-Bit Binary Up/Down Counter | 452K |
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