dm74ls156 National Semiconductor Corporation, dm74ls156 Datasheet - Page 3

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

Symbol
V
I
V
I
I
I
I
’LS155 Switching Characteristics
at V
Recommended Operating Conditions
’LS156 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 1 All typicals are at V
Note 2 I
Symbol
V
V
V
V
I
T
CEX
I
IH
IL
CC
OL
Symbol
t
t
t
t
t
t
I
OL
PLH
PHL
PLH
PHL
PLH
PHL
A
CC
IH
IL
OH
CC
CC
e
is measured with all outputs open A B and C1 inputs at 4 5V and C2 G1 and G2 grounded
5V and T
Input Clamp Voltage
High Level Output
Current
Low Level Output
Voltage
Input Current
Input Voltage
High Level Input Current
Low Level Input Current
Supply Current
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
Low Level Output Current
Free Air Operating Temperature
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
Parameter
CC
e
Parameter
e
25 C (See Section 1 for Test Waveforms and Output Load)
Parameter
5V T
Max
A
e
25 C
V
V
V
V
V
I
V
V
V
V
OL
CC
CC
IL
CC
IL
CC
CC
CC
CC
e
e
e
e
e
e
e
e
e
e
Max V
Max V
4 mA V
From (Input)
A B C2 G1
A B C2 G1
To (Output)
Min I
Min V
Min I
Max V
Max V
Max V
Max (Note 2)
or G2 to Y
or G2 to Y
b
A or B
A or B
Min
4 5
to Y
to Y
to Y
to Y
2
C1
C1
55
Conditions
I
OL
IH
IH
O
e b
CC
I
I
I
e
e
e
e
e
e
e
DM54LS156
e
7V
2 7V
0 4V
5 5V
Min
Min
Max
18 mA
3
Min
Nom
5
Min
DM54
DM74
DM74
C
L
Max
125
5 5
0 7
5 5
e
4
15 pF
Max
18
27
18
27
20
27
Min
R
4 75
Min
L
2
0
e
2 kX
DM74LS156
(Note 1)
Min
0 25
0 35
0 25
Typ
6 1
C
Nom
L
5
e
50 pF
Max
22
35
24
35
24
35
b
b
Max
5 25
Max
100
0 8
5 5
70
0 4
0 5
0 4
0 1
20
10
0 36
8
1 5
Units
Units
Units
ns
ns
ns
ns
ns
ns
mA
mA
mA
mA
mA
mA
V
V
V
V
C
V
V