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【简答题】
17 在图3.17所示由74系列或非门组成的电路中,试求门GM能驱动多少同样的或非门。要求GM输出的高、低电平满足VOH≥3 在图3.17所示由74系列或非门组成的电路中,试求门G M 能驱动多少同样的或非门。要求G M 输出的高、低电平满足V OH ≥3.2V,V OL ≤0.4V。或非门每个输入端的输入电流为I IL ≤-1.6mA,I IH ≤40mA。V OL ≤0.4V时输出电流的最大值为I OL(max) =16mA,V OH ≥3.2V时输出电流最大值为I OH(max) =-0.4mA。G M 的输出电阻可忽略。
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