The SN74AHC1G86 is a single 2-input exclusive-OR gate. The device performs the Boolean function Y = A × B or Y = AB + A B in positive logic.

A common application is as a true or complementary element. If one of the inputs is low, the other input is reproduced in true form at the output. If one of the inputs is high, the signal on the other input is reproduced inverted at the output.