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54LS157 View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS157 Quad 2-Line to 1-Line Data Selectors/Multiplexers National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS157 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
’LS158 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
To (Output)
RL e 2 kX
CL e 15 pF
CL e 50 pF
Min
Max
Min
Max
tPLH
Propagation Delay Time
Data
Low to High Level Output
to Y
12
18
tPHL
Propagation Delay Time
Data
High to Low Level Output
to Y
12
21
tPLH
Propagation Delay Time
Strobe
Low to High Level Output
to Y
17
23
tPHL
Propagation Delay Time
Strobe
High to Low Level Output
to Y
18
28
tPLH
Propagation Delay Time
Select
Low to High Level Output
to Y
20
24
tPHL
Propagation Delay Time
Select
High to Low Level Output
to Y
24
36
Units
ns
ns
ns
ns
ns
ns
Logic Diagrams
LS157
LS158
TL F 6396–3
4
TL F 6396 – 4
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