e
e
5V, T
A
Switching Characteristics V
25 C (See Section 1 for Test Waveforms and Output Load)
§
CC
DM54/74
Symbol
Parameter
Conditions
LS245
Units
Min
Max
12
12
40
40
25
25
16
17
45
45
t
t
t
t
t
t
t
t
t
t
Propagation Delay Time, Low-to-High-Level Output
Propagation Delay Time, High-to-Low-Level Output
Output Enable Time to Low Level
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
PLH
PHL
PZL
PZH
PLZ
PHZ
PLH
PHL
PZL
PZH
e
e
C
45 pF
L
R
667X
L
Output Enable Time to High Level
e
e
Output Disable Time from Low Level
C
L
5 pF
R
667X
L
Output Disable Time from High Level
Propagation Delay Time, Low-to-High-Level Output
Propagation Delay Time, High-to-Low-Level Output
Output Enable Time to Low Level
e
e
C
L
150 pF
R
667X
L
Output Enable Time to High Level
3
NSC [ National Semiconductor ]
