NXP Semiconductors
HEF4520B
Dual binary counter
11. Waveforms
V
I
nCP0 input
0V
V
M
V
I
nCP1 input
0V
0V
t
su
V
I
nMR input
0V
t
PHL
V
OH
nQn output
V
OL
V
M
10 %
t
t
t
t
001aae702
V
M
t
su
V
M
t
PLH
90 %
t
PHL
a. nCP0 and nCP1 set-up times, propagation delays and output transition times
1/f
max
V
I
nCP1 input
(nCP0 = LOW)
0V
t
W
V
I
nCP0 input
(nCP1 = HIGH)
0V
t
W
V
I
nMR input
0V
t
W
t
rec
001aae701
V
M
V
M
V
M
b. nMR recovery time, minimum nCP0, nCP1, and nMR pulse widths and maximum frequency
Measurement points are given in
The logic levels V
OH
and V
OL
are typical output voltage levels that occur with the output load.
Fig 5.
Waveforms showing measurements for switching times
HEF4520B
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© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 6 — 18 November 2011
7 of 14
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