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National Semiconductor Electronic Components Datasheet


74260

Dual 5-Input NOR Gate


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74260 pdf
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
April 1992
Truth Table
TL F 9824 – 1
Order Number DM54LS260J DM54LS260W
DN54LS260E DM74LS260M or DM74LS260N
See NS Package Number E20A J14A M14A N14A or W14B
AaBaCaDaEeY
Inputs
Outputs
ABCDE
Y
LLLLL
XXXXH
XXXHX
XXHXX
XHXXX
HXXXX
H
L
L
L
L
L
C1995 National Semiconductor Corporation TL F 9824
RRD-B30M115 Printed in U S A



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74260 pdf
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
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Recommended Operating Conditions
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
Symbol
VCC
VIH
VIL
IOH
IOL
TA
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
Min
45
2
b55
DM54LS260
Nom
Max
5 55
07
b0 4
4
125
Min
4 75
2
0
DM74LS260
Nom
Max
5 5 25
08
b0 4
8
70
Units
V
V
V
mA
mA
C
Electrical Characteristics over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI Input Clamp Voltage
VOH
High Level Output
Voltage
VCC e Min II e b 18 mA
VCC e Min IOH e Max
VIL e Max
DM54
DM74
25
27
VOL Low Level Output
Voltage
VCC e Min IOL e Max
VIH e Min
DM54
DM74
II Input Current Max
Input Voltage
IIH High Level Input Current
IIL Low Level Input Current
IOL e 4 mA VCC e Min
VCC e Max VI e 7V
VI e 10V
VCC e Max VI e 2 7V
VCC e Max VI e 0 4V
DM74
DM54
DM54
DM74
IOS Short Circuit
Output Current
VCC e Max
(Note 2)
DM54
DM74
b20
b20
ICCH
ICCL
Supply Current with Outputs High
Supply Current with Outputs Low
VCC e Max VIN e GND
VCC e Max VIN e Open
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
Typ
(Note 1)
Max
b1 5
04
05
04
01
20
b0 40
b0 36
b100
b100
40
55
Units
V
V
V
mA
mA
mA
mA
mA
mA
Switching Characteristics VCC e a5V TA e a25 C
Symbol
Parameter
RL e 2 kX CL e 15 pF
Min Max
tPLH
Propagation Delay Time
Low to High Level Output
10
tPHL
Propagation Delay Time
High to Low Level Output
12
Units
ns
ns
2



Part Number 74260
Description Dual 5-Input NOR Gate
Maker National Semiconductor - National Semiconductor
Total Page 6 Pages
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