Datasheet

MOTOROLA CMOS LOGIC DATAMC14518B MC14520B
412
Figure 2. Switching Time Test Circuit and Waveforms
PULSE
GENERATOR
C
L
C
L
C
L
C
L
V
DD
V
SS
Q3
Q2
Q1
Q0
C
E
R
20 ns
Q
t
r
t
f
V
DD
V
SS
20 ns
CLOCK
INPUT
90%
50%
10%
t
WL
t
WH
90%
50%
10%
t
PLH
t
PHL
Figure 3. Timing Diagram
18
1716151413121110987654321
0987654321
2
101514
13121110987654321 43
0987654321
CLOCK
ENABLE
RESET
Q0
Q1
Q2
Q3
Q0
Q1
Q2
Q3
MC14518B
MC14520B