The ACT86 devices are quadruple 2-input
exclusive-OR gates. The devices perform the
Boolean functions Y = A B = 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.