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.
https://e2e.ti.com/support/logic-group/logic/f/logic-forum/1171354/sn74hcs21-q1-series-resistor-value
您好！
如果 Vcc = 5V、输入上拉电压为5V、那么 SN74HCS21-Q1的输入端需要多少串联电阻值？
此致、
Abhishek D.
CMOS 输入具有非常高的阻抗；无需串联电阻器。
谢谢 Clemens、
