Is oit possible to use three input in ic 7486?

Answer 1

If you look at the 7486 IC datasheet you can see, it have 4 independence XOR gates with 2 inputs. So you can only use 2 inputs if you see it like that.

But if you understand the truth table of XOR gate you can have 3 input application using 7486 IC. Here I will show you how.

1.Get the first 2 input into the first XOR gate.

2.Then get the 3rd input together with the Output from the first 2 input XOR gate into another gate.

3.This output should be the result of 3 input XOR gate.

Check this output with 3 input truth table to confirm the answer.