e
e
25 C (See Section 1 for Test Waveforms and Output Load)
Switching Characteristics at V
5V and T
§
CC
A
e
R
L
400X
From (Input)
To (Output)
e
e
L
Symbol
Parameter
C
L
5 pF
C
50 pF
Max
Units
Min
Max
Min
f
t
Maximum Clock Frequency
25
MHz
ns
MAX
Propagation Delay Time
Low to High Level Output
Clock to
Output
PLH
25
28
27
30
30
t
t
t
t
t
t
Propagation Delay Time
High to Low Level Output
Clock to
Output
PHL
PHL
PZH
PZL
PHZ
PLZ
ns
ns
ns
ns
ns
ns
Propagation Delay Time
High to Low Level Output
Clear to
Output
Output Enable Time
to High Level Output
Output Control
to Q
7
7
Output Enable Time
to Low Level Output
Output Control
to Q
Output Disable Time
Output Control
to Q
3
3
14
20
from High Level Output
Output Disable Time
Output Control
to Q
from Low Level Output
3
NSC [ National Semiconductor ]
