| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
|---|
| 1 | DM74LS20N | Dual 4-Input NAND Gate | 46K |
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| 2 | DM74LS20N | Dual 4-Input NAND Gates | 127K |
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| 3 | DM74LS20N/A+ | Dual 4-input NAND Gate | 62K |
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| 4 | DM74LS20N/B+ | Dual 4-input NAND Gate | 62K |
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