| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | 74HCT7540 | Octal Schmitt trigger buffer/line driver; 3-state; inverting | 57K |
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| 2 | 74HCT7540D | 8-Bit Inverting Buffer/Driver | 116K |
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| 3 | 74HCT7540D-T | 8-Bit Inverting Buffer/Driver | 116K |
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| 4 | 74HCT7540N | 8-Bit Inverting Buffer/Driver | 116K |
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