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MM74HC4020 • MM74HC4040
AC Electrical Characteristics
V
CC
= 5V, T
A
= 25°C, C
L
= 15 pF, t
r
= t
f
= 6 ns
Note 6: Typical Propagation delay time to any output can be calculated using: t
P
= 17 + 12(N–1) ns; where N is the number of the output, Q
W
, at V
CC
= 5V.
AC Electrical Characteristics
V
CC
= 2.0V to 6.0V, C
L
= 50 pF, t
r
= t
f
= 6 ns (unless otherwise specified)
Note 7: C
PD
determines the no load dynamic power consumption, P
D
= C
PD
V
CC
2
f + I
CC
V
CC
, and the no load dynamic current consumption,
I
S
= C
PD
V
CC
f + I
CC
.
Symbol Parameter Conditions Typ
Guaranteed
Units
Limit
f
MAX
Maximum Operating Frequency 50 30 MHz
t
PHL
, t
PLH
Maximum Propagation (Note 6) 17 35 ns
Delay Clock to Q
t
PHL
Maximum Propagation 16 40 ns
Delay Reset to any Q
t
REM
Minimum Reset 10 20 ns
Removal Time
t
W
Minimum Pulse Width 10 16 ns
Symbol Parameter Conditions
V
CC
T
A
= 25°CT
A
= −40 to 85°CT
A
= −55 to 125°C
Units
Typ Guaranteed Limits
f
MAX
Maximum Operating 2.0V 10 6 5 4
MHzFrequency 4.5V 40 30 24 20
6.0V 50 35 28 24
t
PHL
, t
PLH
Maximum Propagation 2.0V 80 210 265 313
nsDelay Clock to Q
1
4.5V 21 42 53 63
6.0V 18 36 45 53
t
PHL,
t
PLH
Maximum Propagation 2.0V 80 125 156 188
nsDelay Between Stages 4.5V 18 25 31 38
from Q
n
to Q
n+1
6.0V 15 21 26 31
t
PHL
Maximum Propagation 2.0V 72 240 302 358
nsDelay Reset to any Q 4.5V 24 48 60 72
(4020 and 4040) 6.0V 20 41 51 61
t
REM
Minimum Reset 2.0V 100 126 149
nsRemoval Time 4.5V 20 25 50
6.0V 16 21 25
t
W
Minimum Pulse Width 2.0V 90 100 120
ns4.5V 16 20 24
6.0V 14 18 20
t
TLH
, t
THL
Maximum 2.0V 30 75 95 110
nsOutput Rise 4.5V 10 15 19 22
and Fall Time 6.0V 9 13 16 19
t
r
, t
f
Maximum Input Rise and 1000 1000 1000
nsFall Time 500 500 500
400 400 400
C
PD
Power Dissipation (per package) 55 pF
Capacitance (Note 7)
C
IN
Maximum Input 5 10 10 10 pF
Capacitance
