Switching Characteristics
5.0V, T
e a
e a
A
V
CC
25 C (See Section 1 for waveforms and load configurations)
§
5497
DM7497
e
e
e
e
C
15 pF
C
15 pF
L
L
Symbol
Parameter
Units
R
400X
R
400X
L
L
Min
25
Max
Min
25
Max
f
Maximum Clock Frequency
Propagation Delay
MHz
ns
max
t
t
18
23
18
23
PLH
E
Z
to O
Z
PHL
t
t
Propagation Delay
to O
30
33
30
33
PLH
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
E
Z
PHL
Y
t
t
Propagation Delay
to O
14
10
14
10
PLH
E
Y
PHL
Y
t
t
Propagation Delay
to O
23
23
23
23
PLH
S
n
PHL
Y
t
t
Propagation Delay
to O
14
14
14
14
PLH
S
n
PHL
Z
t
t
Propagation Delay
CP to O
39
30
39
30
PLH
PHL
Y
t
t
Propagation Delay
CP to O
18
26
18
26
PLH
PHL
Z
t
t
Propagation Delay
CP to TC
35
33
30
33
PLH
PHL
t
t
Propagation Delay
CE to TC
25
21
20
21
PLH
PHL
t
Propagation Delay
PLH
43
34
36
23
MR to O
Y
t
Propagation Delay
MR to O
PHL
Z
Timing Diagrams
TL/F/9780–5
TL/F/9780–6
3
NSC [ National Semiconductor ]
