| 序号 | 型号 | 描述 | 大小 | 厂家Logo | 下载 |
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| 1 | MC74LCX540DW | LOW-VOLTAGE CMOS OCTAL BUFFER | 158K |
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| 2 | MC74LCX540DW | LOW-VOLTAGE CMOS OCTAL BUFFER | 158K |
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| 3 | MC74LCX540DWR2 | Low-Voltage CMOS Octal Buffer Flow Through Pinout With 5 V−Tolerant Inputs and Outputs (3−State, Inverting) | 90K |
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