dm74ls156 National Semiconductor Corporation, dm74ls156 Datasheet - Page 4

• Manufacturer Part Number: dm74ls156
• Description: Dual 2-line To 4-line Decoders/demultiplexers
• Manufacturer: National Semiconductor Corporation

’LS156 Switching Characteristics
at V
Logic Diagram
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)
From (Input)
A B C2 G1
A B C2 G1
To (Output)
or G2 to Y
or G2 to Y
A or B
A or B
to Y
to Y
to Y
to Y
C1
C1
4
Min
C
L
e
15 pF
Max
28
33
28
33
28
34
R
L
e
2 kX
Min
C
L
TL F 6395 – 2
e
50 pF
Max
53
43
53
43
53
43
Units
ns
ns
ns
ns
ns
ns