NSC DM54LS260J-883 Datasheet
TL/F/9824
DM54LS260/DM74LS260 Dual 5-Input NOR Gate
April 1992
DM54LS260/DM74LS260
Dual 5-Input NOR Gate
General Description
This device contains two individual five input gates, each of
which perform the logic NOR function.
Connection Diagram
Dual-In-Line Package
TL/F/9824– 1
Order Number DM54LS260J, DM54LS260W,
DN54LS260E, DM74LS260M or DM74LS260N
See NS Package Number E20A, J14A, M14A, N14A or W14B
Truth Table
AaBaCaDaEeY
Inputs Outputs
ABCDE Y
LLLLL H
XXXXH L
XXXHX L
XXHXX L
XHXXX L
HXXX X L
C
1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings (Note)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range
DM54LS
b
55§Ctoa125§C
DM74LS 0
§
Ctoa70§C
Storage Temperature Range
b
65§Ctoa150§C
Note:
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’’
table are not guaranteed at the absolute maximum ratings.
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation.
Recommended Operating Conditions
Symbol Parameter
DM54LS260 DM74LS260
Units
Min Nom Max Min Nom Max
V
CC
Supply Voltage 4.5 5 5.5 4.75 5 5.25 V
V
IH
High Level Input Voltage 2 2 V
V
IL
Low Level Input Voltage 0.7 0.8 V
I
OH
High Level Output Current
b
0.4
b
0.4 mA
I
OL
Low Level Output Current 4 8 mA
T
A
Free Air Operating Temperature
b
55 125 0 70
§
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
Typ
Max Units
(Note 1)
V
I
Input Clamp Voltage V
CC
e
Min, I
I
eb
18 mA
b
1.5 V
V
OH
High Level Output V
CC
e
Min, I
OH
e
Max DM54 2.5
V
Voltage V
IL
e
Max
DM74 2.7
V
OL
Low Level Output V
CC
e
Min, I
OL
e
Max DM54 0.4
Voltage V
IH
e
Min
DM74 0.5 V
I
OL
e
4 mA, V
CC
e
Min DM74 0.4
I
I
Input Current@Max V
CC
e
Max, V
I
e
7V
0.1 mA
Input Voltage V
I
e
10V DM54
I
IH
High Level Input Current V
CC
e
Max, V
I
e
2.7V 20 m A
I
IL
Low Level Input Current V
CC
e
Max, V
I
e
0.4V DM54
b
0.40
mA
DM74
b
0.36
I
OS
Short Circuit V
CC
e
Max DM54
b
20
b
100
mA
Output Current (Note 2)
DM74
b
20
b
100
I
CCH
Supply Current with Outputs High V
CC
e
Max, V
IN
e
GND 4.0 mA
I
CCL
Supply Current with Outputs Low V
CC
e
Max, V
IN
e
Open 5.5 mA
Note 1: All typicals are at V
CC
e
5V, T
A
e
25§C.
Note 2: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Switching Characteristics V
CC
ea
5V, T
A
ea
25§C
Symbol Parameter
R
L
e
2kX,C
L
e
15 pF
Units
Min Max
t
PLH
Propagation Delay Time
10 ns
Low to High Level Output
t
PHL
Propagation Delay Time
12 ns
High to Low Level Output
2
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