| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | M74HC21B1 | DUAL 4-INPUT AND GATE | 197K |
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| 2 | M74HC21B1 | DUAL 4-INPUT AND GATE | 197K |
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| 3 | M74HC21B1R | DUAL 4-INPUT AND GATE | 238K |
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| 4 | M74HC21B1R | DUAL 4-INPUT AND GATE | 197K |
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