74HC77 - 4-bit biestable latch

D0 E01  Q0
x  0    No cambia
0  1    0
1  1    1

Pines:
D0..D3 = Entradas
E01 = Latch de Q0 y Q1
E23 = Latch de Q2 y Q3
Q0..Q3 = Salidas

Ver help en:
   ..share/simulide/data/examples/logic/74_series/Help_74HC77.simu