| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | M74HC540B1R | OCTAL BUS BUFFER WITH 3 STATE OUTPUTS HC540: INVERTED - HC541 NON INVERTED | 272K |
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| 2 | M74HC540B1R | OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (INVERTED) | 259K |
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