Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed. The device should not be operated at these limits. The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Supply Voltage
Input Voltage
7V
7V
Operating Free Air Temperature Range
DM54LS and 54LS
DM74LS
b
b
a
a
55 C to 125 C
§
§
0 C to 70 C
§
§
a
65 C to 150 C
Storage Temperature Range
§
§
Recommended Operating Conditions
DM54LS125A
DM74LS125A
Symbol
Parameter
Units
Min
4.5
2
Nom
Max
Min
4.75
2
Nom
Max
V
V
V
Supply Voltage
5
5.5
5
5.25
V
V
CC
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
IH
0.7
0.8
V
IL
b
b
I
I
1
2.6
24
70
mA
mA
OH
OL
12
b
T
A
55
125
0
C
§
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Typ
(Note 1)
Symbol
Parameter
Conditions
Min
Max
Units
e
e
e b
e
b
1.5
V
V
Input Clamp Voltage
V
Min, I
Min, I
18 mA
V
V
I
CC
I
High Level Output
Voltage
V
V
Max
Min
OH
CC
OH
2.4
3.4
e
e
Max, V
IL
IH
e
e
V
OL
Low Level Output
Voltage
V
V
Min, I
Max
DM54
DM74
DM74
0.25
0.35
0.25
0.4
CC
OL
e
Max
IL
0.5
0.4
V
e
e
I
12 mA, V
Min
OL
CC
@
Input Current Max
Input Voltage
e
e
I
I
I
I
V
V
V
Max, V
Max, V
Max, V
Max, V
7V
I
CC
I
0.1
20
mA
e
e
e
e
e
High Level Input
Current
2.7V
0.4V
mA
IH
CC
CC
I
Low Level Input
Current
IL
I
b
0.4
mA
e
Off-State Output Current
with High Level Output
Voltage Applied
V
CC
V
IH
2.4V
Max
OZH
O
e
e
Min, V
IL
20
mA
e
Max, V
e
I
Off-State Output Current
with Low Level Output
Voltage Applied
V
CC
V
IH
0.4V
OZL
O
e
e
b
20
Min, V
Max
mA
IL
e
(Note 2)
b
b
b
I
I
Short Circuit
Output Current
V
CC
Max
DM54
DM74
20
20
100
100
OS
CC
mA
mA
b
e
Supply Current
V
CC
Max (Note 3)
11
20
e
e
25 C.
Note 1: All typicals are at V
5V, T
§
CC
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 3: I is measured with the data control (C) inputs at 4.5V and the data inputs grounded.
A
CC
2