Table 7-1 Flip-Flop Function Table
| INPUTS(1) |
OUTPUT(2) |
| CLR |
CLK(3) |
D |
Q |
| L |
X |
X |
L |
| H |
L, H, ↓ |
X |
Q0 |
| H |
↑ |
L |
L |
| H |
↑ |
H |
H |
(1) L = Input low, H = Input high, ↑ = Input
transitioning from low to high, ↓ = Input
transitioning from high to low, X = Don't
care
(2) L = Output low, H = Output high, Q0 =
Previous state
(3) Internal flip-flop input, denoted as
Y on functional block diagram
Table 7-2 Combinational Logic Function Table
| INPUTS |
OUTPUT |
| A |
B |
C |
D |
Y |
| L |
L |
L |
L |
L |
| L |
L |
L |
H |
H |
| L |
L |
H |
L |
L |
| L |
L |
H |
H |
H |
| L |
H |
L |
L |
L |
| L |
H |
L |
H |
H |
| L |
H |
H |
L |
H |
| L |
H |
H |
H |
L |
| H |
L |
L |
L |
H |
| H |
L |
L |
H |
L |
| H |
L |
H |
L |
L |
| H |
L |
H |
H |
H |
| H |
H |
L |
L |
H |
| H |
H |
L |
H |
L |
| H |
H |
H |
L |
H |
| H |
H |
H |
H |
L |