DM74LS157E National Semiconductor, DM74LS157E Datasheet - Page 4

• Manufacturer Part Number: DM74LS157E
• Description: Quad 2-Line to 1-Line Data Selectors/Multiplexers
• Manufacturer: National Semiconductor

’LS158 Switching Characteristics
at V
Logic Diagrams
Symbol
t
t
t
t
t
t
PLH
PHL
PLH
PHL
PLH
PHL
CC
e
5V and T
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
A
e
Parameter
25 C (See Section 1 for Test Waveforms and Output Load)
LS157
TL F 6396–3
From (Input)
To (Output)
Strobe
Strobe
Select
Select
Data
Data
to Y
to Y
to Y
to Y
to Y
to Y
4
Min
C
L
e
15 pF
Max
12
12
17
18
20
24
R
L
e
2 k
LS158
Min
C
L
e
50 pF
Max
18
21
23
28
24
36
TL F 6396– 4
Units
ns
ns
ns
ns
ns
ns