Datasheet

www.fairchildsemi.com 6
MM74HCT373 • MM74HCT374
AC Electrical Characteristics
MM74HCT374: V
CC
5.0V, t
r
t
f
6 ns T
A
25 C (unless otherwise specified)
AC Electrical Characteristics
MM74HCT374: V
CC
5.0V 10%, t
r
t
f
6 ns (unless otherwise specified)
Note 6: C
PD
determines the no load 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 Clock Frequency 50 30 MHz
t
PHL
, t
PLH
Maximum Propagation Delay C
L
45 pF 20 32 ns
to Output
t
PZH
, t
PZL
Maximum Enable Propagation Delay C
L
45 pF 19 28 ns
Control to Output R
L
1 k
t
PHZ
, t
PLZ
Maximum Disable Propagation Delay C
L
5 pF 17 25 ns
Control to Output R
L
1 k
t
W
Minimum Clock Pulse Width 20 ns
t
S
Minimum Setup Time Data to Clock 5 ns
t
H
Minimum Hold Time Clock to Data 16 ns
Symbol Parameter Conditions
T
A
25 CT
A
40 to 85 CT
A
55 to 125 C
Units
Typ Guaranteed Limits
f
MAX
Maximum Clock Frequency 30 24 20 MHz
t
PHL
, t
PLH
Maximum Propagation Delay C
L
50 pF 22 36 45 48 ns
to Output C
L
150 pF 30 46 57 69 ns
t
PZH
, t
PZL
Maximum Enable Propagation C
L
50 pF 21 30 37 45 ns
Delay Control to Output C
L
150 pF 30 40 50 60 ns
R
L
1 k
t
PHZ
, t
PLZ
Maximum Disable Propagation C
L
50 pF 21 30 37 45 ns
Delay Control to Output R
L
1 k
t
THL
, t
TLH
Maximum Output Rise C
L
50 pF 8 12 15 18 ns
and Fall Time
t
W
Minimum Clock Pulse Width 16 20 24 ns
t
S
Minimum Setup Time Data to Clock 20 25 30 ns
t
H
Minimum Hold Time Clock to Data 5 5 5 ns
C
IN
Maximum Input Capacitance 10 10 10 pF
C
OUT
Maximum Output Capacitance 20 20 20 pF
C
PD
Power Dissipation Capacitance OC V
CC
5pF
(Note 6) OC GND 58 pF