This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
SRCLR 清除输入移位寄存器、但不清除输出寄存器。 因此、输出的状态未定义。
只有在 RCLK 上有一个边沿后、输出才变为低电平。
如果输出在初始化前显示为高阻抗、则 OE 必须保持高电平、直到初始化完成。