| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74HC540 | Octal buffer/line driver; 3-state; inverting | 53K |
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| 2 | 74HC540D | Octal buffer/line driver; 3-state; inverting | 53K |
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| 3 | 74HC540D-T | 8-Bit Inverting Buffer/Driver | 88K |
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| 4 | 74HC540N | Octal buffer/line driver; 3-state; inverting | 53K |
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