
Switching Characteristics
at V
CC
e
5V and T
A
e
25
§
C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
To (Output)
R
L
e
400
X
, C
L
e
15 pF
Units
Min
Max
f
MAX
Maximum Clock Frequency
25
MHz
t
PLH
Propagation Delay Time
Low to High Level Output
Clock
to RC
27
ns
t
PHL
Propagation Delay Time
High to Low Level Output
Clock
to RC
24
ns
t
PLH
Propagation Delay Time
Low to High Level Output
Clock
to Q
20
ns
t
PHL
Propagation Delay Time
High to Low Level Output
Clock
to Q
23
ns
t
PLH
Propagation Delay Time
Low to High Level Output
Clock
to Q
21
ns
t
PHL
Propagation Delay Time
High to Low Level Output
Clock
to Q
25
ns
t
PLH
Propagation Delay Time
Low to High Level Output
ENT
to RC
15
ns
t
PHL
Propagation Delay Time
High to Low Level Output
ENT
to RC
16
ns
t
PHL
Propagation Delay Time
High to Low Level Output
Clear
to Q
36
ns
3