麻烦问一下,我是用TXB0104,1.8V和5V的双向转换,当我突然断掉5V(HD_HPD)信号输入时,用示波器测量芯片两端的电压还是1.8V和5V,怎么让它回到0点;如下电路图,麻烦帮忙解答一下,感谢!
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您好,
是的,如果输入没有外部信号,输出会保持其最后的状态;您可以在输入端加上下拉电阻,但是上下拉电阻对输出高低电平有影响,具体查看下面文档1.3 TXB部分: