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.

逻辑电路SN74HC138D失效问题



大家好,我想问一下,逻辑电路SN74HC138D在使用过程中失效,现测量出引脚A阻抗为0.76KΩ(正常器件为高阻),Vcc阻抗变为600Ω。电路中外部接入一根导线连接控制引脚A,导线在工作时首先连接到产品的地上,在工作过程中脱离地变为悬空状态,这样会导致器件失效吗