Datasheet

www.fairchildsemi.com 4
MM74HC273
AC Electrical Characteristics
V
CC
5V, T
A
25 C, C
L
15 pF, t
r
t
f
6 ns
AC Electrical Characteristics
C
L
50 pF, t
r
t
f
6 ns (unless otherwise specified)
Note 5: 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 18 27 ns
Delay, Clock to Output
t
PHL
Maximum Propagation 18 27 ns
Delay, Clear to Output
t
REM
Minimum Removal Time, 10 20 ns
Clear to Clock
t
s
Minimum Setup Time 10 20 ns
Data to Clock
t
H
Minimum Hold Time 20ns
Clock to Data
t
W
Minimum Pulse Width 10 16 ns
Clock or Clear
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 16 5 4 3 MHz
Frequency 4.5V 74 27 21 18 MHz
6.0V 78 31 24 20 MHz
t
PHL
, t
PLH
Maximum Propagation 2.0V 38 135 170 205 ns
Delay, Clock to Output 4.5V 14 27 34 41 ns
6.0V 12 23 29 35 ns
t
PHL
Maximum Propagation 2.0V 42 135 170 205 ns
Delay, Clear to Output 4.5V 19 27 34 41 ns
6.0V 18 23 29 35 ns
t
REM
Minimum Removal Time 2.0V 0 25 32 37 ns
Clear to Clock 4.5V 0 5 6 7 ns
6.0V 0 4 5 6 ns
t
s
Minimum Setup Time 2.0V 26 100 125 150 ns
Data to Clock 4.5V 7 20 25 30 ns
6.0V 5 17 21 25 ns
t
H
Minimum Hold Time 2.0V 15 0 0 0 ns
Clock to Data 4.5V 60 0 0 ns
6.0V 40 0 0 ns
t
W
Minimum Pulse Width 2.0V 34 80 100 120 ns
Clock or Clear 4.5V 11 16 20 24 ns
6.0V 10 14 18 20 ns
t
r
, t
f
Maximum Input Rise and 2.0V 1000 1000 1000 ns
Fall Time, Clock 4.5V 500 500 500 ns
6.0V 400 400 400 ns
t
THL
, t
TLH
Maximum Output Rise 2.0V 28 75 95 110 ns
and Fall Time 4.5V 11 15 19 22 ns
6.0V 9 13 16 19 ns
C
PD
Power Dissipation (per flip-flop) 45 pF
Capacitance (Note 5)
C
IN
Maximum Input 7 10 10 10 pF
Capacitance