DM74LS155 Fairchild Semiconductor, DM74LS155 Datasheet - Page 3

• Manufacturer Part Number: DM74LS155
• Description: Dual 2-Line to 4-Line Decoders/Demultiplexers
• Manufacturer: Fairchild Semiconductor

V
V
V
I
I
I
I
I
t
t
t
t
t
t
V
V
V
V
I
T
I
IH
IL
OS
CC
PLH
PHL
PLH
PHL
PLH
PHL
Absolute Maximum Ratings
DM74LS155 Recommended Operating Conditions
DM74LS155 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 4: All typicals are at V
Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 6: I
DM74LS155 Switching Characteristics
at V
OL
I
OH
OL
Symbol
Symbol
A
CC
IH
IL
OH
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
CC
Symbol
CC
5V and T
is measured with all outputs OPEN, A,B, and C1 inputs at 4.5V, and C2, G1, and G2 inputs GROUNDED.
Input Clamp Voltage
HIGH Level
Output Voltage
LOW Level
Output Voltage
Input Current @ Max Input Voltage
HIGH Level Input Current
LOW Level Input Current
Short Circuit Output Current
Supply Current
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
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Free Air Operating Temperature
25 C
CC
Parameter
Parameter
5V, T
A
25 C.
Parameter
65 C to 150 C
V
V
V
V
I
V
V
V
V
V
V
0 C to 70 C
OL
(Note 3)
CC
CC
IL
CC
IL
CC
CC
CC
CC
CC
Max, V
Max, V
4 mA, V
From (Input)
Min, I
Min, I
Min, I
Max, V
Max, V
Max, V
Max (Note 5)
Max (Note 6)
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
I
OH
OL
7V
7V
IH
IH
CC
I
I
I
Conditions
18 mA
7V
2.7V
0.4V
Min
Min
Max
Max
3
Min
Note 3: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
4.75
Min
2
0
Min
C
L
15 pF
Nom
5
Max
Min
2.7
18
27
18
27
20
27
20
R
L
2 k
(Note 4)
0.35
0.25
Typ
Min
3.4
6.1
C
Max
5.25
0.8
L
70
0.4
8
50 pF
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Max
Max
0.5
0.4
0.1
0.36
20
100
10
22
35
24
35
24
35
1.5
Units
mA
mA
V
V
V
C
Units
Units
mA
mA
mA
mA
ns
ns
ns
ns
ns
ns
V
V
V
A