The CD74AC86 is a quadruple 2-input exclusive-OR gate. This device performs the Boolean function Y = A B or Y = A\B + AB\ in positive logic.
A common application is as a true/complement 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.
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