#### maxeen

##### Member level 1

After reading the datasheet of the 3.3V microcontroller, it says that the maximum voltage applied to any pin is Vcc + 0.3V, which would be exactly 3.6V. I think that this is too risky, I am not sure if I already damaged one of the launchpads.

Anyway, to solve this problem, I was thinking of using a voltage follower amp-op to limite the 3.6V high logic level to 3.3V.

My question is: if I power the amp-op with 3.3V, can I input 3.6V on it withou damaging? I am thinking about the LM358, which is a single-supply. Its datasheet says that its maximum supply voltage is 32V, and its maximum input voltage is 32V, which does not seems to depend on supply level.

I am having trouble to upload an image of the datasheet. The maximum specs for the LM358 can be found at: https://www.ti.com/lit/ds/symlink/lm358.pdf, page 4.

Any help would be appreciated