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May 1986
Revised March 2000
DM74LS02
Quad 2-Input NOR Gate
General Description
This device contains four independent gates each of which
performs the logic NOR function.
Ordering Code:
Order Number Package Number Package Description
DM74LS02M M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
DM74LS02SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
DM74LS02N N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also availab le in Tape and Reel. Specify by appending th e s uffix let t er “X” to the ordering cod e.
Connection Diagram Function Table
Y = A + B
Inputs Output
ABY
LLH
LHL
HLL
HHL
H = HIGH Logic Level
L = LOW Logic Level
DM74LS02 Quad 2-Input NOR Gate
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Absolute Maximum Ratings(Note 1)
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0°C to +70°C
DM74LS02
Storage Temperature Range −65°C to +150°C
Note 1: The “Absolute Maximum Ratings” are those values beyond which
the safety of the dev ice cannot be guaranteed. T he device sh ould not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommend ed O peratin g Cond itions” t able w ill defin e the c ondit ions
for actual device operation.
Recommended Operating Conditions
Symbol Parameter Min Nom Max Units
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Supply Voltage 4.75 5 5. 25 V
HIGH Level Input Voltage 2 V
LOW Level In put Voltag e 0.8 V
HIGH Level Output Current −0.4 mA
LOW Level Ou tput Current 8 mA
Free Air Operating Temperature 0 70 °C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol Parameter Conditions Min
V
I
V
OH
V
OL
I
I
I
IH
I
IL
I
OS
I
CCH
I
CCL
Note 2: All typicals are at VCC = 5V, TA = 25°C.
Note 3: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Input Clamp Voltage VCC = Min, II = −18 mA −1.5 V
HIGH Level VCC = Min, IOH = Max,
Output Voltage VIL = Max
LOW Level VCC = Min, IOL = Max,
Output Voltage VIH = Min V
IOL = 4 mA, VCC = Min 0.25 0.4
Input Current @ Max Input Voltage VCC = Max, VI = 7V 0.1 mA
HIGH Level Input Current VCC = Max, VI = 2.7V 20 µA
LOW Level Input Current VCC = Max, VI = 0.4V −0.40 mA
Short Circuit Output Current VCC = Max (Note 3) −20 −100 mA
Supply Current with Outputs HIGH VCC = Max 1.6 3.2 mA
Supply Current with Outputs LOW VCC = Max 2.8 5.4 mA
2.7 3.4 V
Typ
(Note 2)
0.35 0.5
Max Units
Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol Parameter CL = 15 pF CL = 50 pF Units
Min Max Min Max
t
PLH
t
PHL
Propagation Delay Time
LOW-to-HIGH Level Output
Propagation Delay Time
HIGH-to-LOW Level Output
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RL = 2 kΩ
13 18 ns
10 15 ns
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Physical Dimensions inches (millimeters) unless otherwise noted
DM74LS02
14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow
Package Number M14A
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
DM74LS02
14-Lead Small Outline Package ( SOP), EIAJ TYPE II, 5.3mm Wide
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Package Number M14D
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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
DM74LS02 Quad 2-Input NOR Gate
14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent license s are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
1. Life support de vices o r syst ems are dev ic es or syste ms
which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provide d in the labe l ing, can be re asonably expected to result in a significant injury to the
user.
Package Number N14A
2. A critica l compo nent in any com ponen t of a life s uppor t
device or system whose failu re to perform can b e reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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