7486
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The 7486 (variants 74LS86, 74HC86) is a 74-series logic IC with four independent 2-input XOR gates.
7486 Pinout
.--\/--.
1A -> |01 14| -- +5V
1B -> |02 13| <- 4A
1Y <- |03 12| <- 4B
2A -> |04 11| -> 4Y
2B -> |05 10| <- 3A
2Y <- |06 09| <- 3B
Gnd -- |07 08| -> 3Y
`------'
Signal descriptions
Y is low if A and B are the same (both low or both high). Y is high if A and B are different (A high and B low or vice versa).