高性能硅门极 CMOS MC74C4020A 与标准 CMOS MC14020B 的引脚输出相同。该器件输入兼容标准的 CMOS 输出；带有上拉电阻器，可兼容 LSTTL 输出。此器件由 14 个主从触发器组成，具有有带出至引脚的 12 级。每个触发器的输出馈送到下一个触发器，每个输出处的频率为上一个的一半。重置为异步和有效高电平。由于内部波纹延迟，Q 输出的状态变化不会同时发生。因此，解码的输出信号容易发生解码尖峰，对于某些设计可能必须使用 HC4020A 的时钟进行门控。
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