I'm not sure what your question is. When you don't understand a thing, you can google for it. Like it says it uses a Schmitt trigger for noise protection. How

I'm not sure what your question is. When you don't understand a thing, you can google for it. Like it says it uses a Schmitt trigger for noise protection. How does that work? Wikipedia explains: https://en.wikipedia.org/wiki/Schmitt_trigger https://en.wikipedia.org/wiki/Schmitt_trigger If you have a specific goal for the chip, look up the words that seem to be related to that goal. Once you do that a bunch, you get better at figuring out which words matter.