Datasheet
Recommended Operating Conditions:
Parameter Symbol Min Typ Max Unit
Supply Voltage V
CC
4.75 5.0 5.25 V
High−Level Output Current I
OH
− − −400 A
Low−Level Output Current I
OL
− − 8 mA
Clock Frequency f
clock
0 − 25 MHz
Width of Any Input Pulse t
w
20 − − ns
Clear Inactive Setup Time t
su
15 − − ns
Load Inactive Setup Time t
su
15 − − ns
Data Setup Time t
su
20 − − ns
Data Hold Time t
h
5 − − ns
Operating Temperature Range T
A
0 − +70 C
Electrical Characteristics: (Note 2, Note 3)
Parameter Symbol Test Conditions Min Typ Max Unit
High−Level Input Voltage V
IH
2 − − V
Low−Level Input Voltage V
IL
− − 0.8 V
Input Clamp Voltage V
IK
V
CC
= MIN, I
I
= −18mA − − −1.5 V
High Level Output Voltage V
OH
V
CC
= MIN, V
IH
= 2V, V
IL
= MAX, I
OH
= -400A 2.7 3.4 − V
Low Level Output Voltage V
OL
V
CC
= MIN, V
IH
= 2V, V
IL
= MAX I
OL
= 4mA − 0.15 0.4 V
I
OL
= 8mA − 0.35 0.5 V
Input Current I
I
V
CC
= MAX, V
I
= 7V − − 0.1 mA
High Level Input Current I
IH
V
CC
= MAX, V
I
= 2.7V − − 20 A
Low Level Input Current I
IL
V
CC
= MAX, V
I
= 0.4V − − −0.4 mA
Short−Circuit Output Current I
OS
V
CC
= MAX, Note 4 −20 − −100 mA
Supply Current I
CC
V
CC
= MAX, Note 5 − 19 34 mA
Note 2. .For conditions shown as MIN or MAX, use the appropriate value specified under “Recommended
Operation Conditions”.
Note 3. All typical values are at V
CC
= 5V, T
A
= +25C.
Note 4. Not more than one output should be shorted at a time and duration of short−circuit should
not exceed one second.
Note 5. I
CC
is measured with all outputs open, clear and load inputs grounded, and all other inputs
at 4.5V.
Switching Characteristics
: (V
CC
= 5V, T
A
= +25C unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Maximum Clock Frequency f
max
R
L
= 2k, C
L
= 15pF
25 32 − MHz
Propagation Delay Time
(From UP Input to Any CO
Output)
t
PLH
− 17 26 ns
t
PHL
− 18 24 ns
Propagation Delay Time
(From DOWN Input to BO
Output)
t
PLH
− 16 24 ns
t
PHL
− 15 24 ns
Propagation Delay Time
(From UP or DOWN Input to Q Output)
t
PLH
− 27 38 ns
t
PHL
− 30 47 ns
Propagation Delay Time
(From LOAD
Input to Q Output)
t
PLH
− 24 40 ns
t
PHL
− 25 40 ns
Propagation Delay Time
(From CLR Input to Q Output)
t
PHL
− 23 35 ns