SN54ALS02A, SN54AS02, SN74ALS02A, SN74AS02

QUADRUPLE 2-INPUT POSITIVE-NOR GATES

SDAS111B – APRIL 1982 – REVISED DECEMBER 1994

• Package Options Include Plastic SN54ALS02A, SN54AS02 . . . J PACKAGE

Small-Outline (D) Packages, Ceramic Chip SN74ALS02A, SN74AS02 . . . D OR N PACKAGE
(TOP VIEW)
Carriers (FK), and Standard Plastic (N) and
Ceramic (J) 300-mil DIPs
1Y 1 14 VCC
description 1A 2 13 4Y
1B 3 12 4B
These devices contain four independent 2-input 2Y 4 11 4A
positive-NOR gates. They perform the Boolean 2A 5 10 3Y
functions Y = A + B or Y = A • B in positive logic. 2B 6 9 3B
GND 7 8 3A
The SN54ALS02A and SN54AS02 are
characterized for operation over the full military
temperature range of – 55°C to 125°C. The SN54ALS02A, SN54AS02 . . . FK PACKAGE
SN74ALS02A and SN74AS02 are characterized (TOP VIEW)
for operation from 0°C to 70°C.

VCC
NC
1A
1Y

4Y
FUNCTION TABLE
(each gate) 3 2 1 20 19
1B 4 18 4B
INPUTS OUTPUT
NC 5 17 NC
A B Y
2Y 6 16 4A
H X L NC NC
7 15
X H L 2A 8 14 3Y
L L H 9 10 11 12 13

GND
2B

3A
3B
NC
NC – No internal connection

logic symbol† logic diagram (positive logic)

2 2
1A ≥1 1 1A 1
3 1Y 3 1Y
1B 1B
5 5
2A 4 2A 4
6 2Y 6 2Y
2B 2B
8 8
3A 10 3A 10
9 3Y 9 3Y
3B 3B
11 11
4A 13 4A 13
12 4Y 12 4Y
4B 4B

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.
Pin numbers shown are for the D, J, and N packages.

PRODUCTION DATA information is current as of publication date. Copyright  1994, Texas Instruments Incorporated
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 1

SN54ALS02A, SN54AS02, SN74ALS02A, SN74AS02
QUADRUPLE 2-INPUT POSITIVE-NOR GATES
SDAS111B – APRIL 1982 – REVISED DECEMBER 1994

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, TA: SN54ALS02A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74ALS02A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

SN54ALS02A SN74ALS02A
UNIT
MIN NOM MAX MIN NOM MAX
VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V
VIH High-level input voltage 2 2 V
0.8‡ 0.8
VIL Low level input voltage
Low-level V
0.7§
IOH High-level output current – 0.4 – 0.4 mA
IOL Low-level output current 4 8 mA
TA Operating free-air temperature – 55 125 0 70 °C
‡ Applies over temperature range – 55°C to 70°C
§ Applies over temperature range 70°C to 125°C

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)
SN54ALS02A SN74ALS02A
PARAMETER TEST CONDITIONS UNIT
MIN TYP¶ MAX MIN TYP¶ MAX
VIK VCC = 4.5 V, II = –18 mA –1.5 –1.5 V
VOH VCC = 4.5 V to 5.5 V, IOH = – 0.4 mA VCC – 2 VCC – 2 V
IOL = 4 mA 0.25 0.4 0.25 0.4
VOL VCC = 4 5V
4.5 V
IOL = 8 mA 0.35 0.5
II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA
IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA
IIL VCC = 5.5 V, VI = 0.4 V – 0.1 – 0.1 mA
IO# VCC = 5.5 V, VO = 2.25 V – 20 – 112 – 30 – 112 mA
ICCH VCC = 5.5 V, VI = 0 0.86 2.2 0.86 2.2 mA
ICCL VCC = 5.5 V, VI = 4.5 V 2.16 4 mA 2.16 4
¶ All typical values are at VCC = 5 V, TA = 25°C.
# The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 SN54ALS02A, SN54AS02, SN74ALS02A, SN74AS02
QUADRUPLE 2-INPUT POSITIVE-NOR GATES
SDAS111B – APRIL 1982 – REVISED DECEMBER 1994

switching characteristics (see Figure 1)

VCC = 4.5 V to 5.5 V,
CL = 50 pF,
FROM TO RL = 500 Ω,
PARAMETER
(INPUT) (OUTPUT) TA = MIN to MAX† UNIT
SN54ALS02A SN74ALS02A
MIN MAX MIN MAX
tPLH 1 16 1 12
A or B Y ns
tPHL 1 11 1 10
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡
Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Input voltage, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Operating free-air temperature range, TA: SN54AS02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
SN74AS02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

recommended operating conditions

SN54AS02 SN74AS02
UNIT
MIN NOM MAX MIN NOM MAX
VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V
VIH High-level input voltage 2 2 V
VIL Low-level input voltage 0.8 0.8 V
IOH High-level output current –2 –2 mA
IOL Low-level output current 20 20 mA
TA Operating free-air temperature – 55 125 0 70 °C

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)
SN54AS02 SN74AS02
PARAMETER TEST CONDITIONS UNIT
MIN TYP§ MAX MIN TYP§ MAX
VIK VCC = 4.5 V, II = –18 mA –1.2 –1.2 V
VOH VCC = 4.5 V to 5.5 V, IOH = – 2 mA VCC – 2 VCC – 2 V
VOL VCC = 4.5 V, IOL = 20 mA 0.35 0.5 0.35 0.5 V
II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA
IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA
IIL VCC = 5.5 V, VI = 0.4 V – 0.5 – 0.5 mA
IO¶ VCC = 5.5 V, VO = 2.25 V – 30 – 112 – 30 – 112 mA
ICCH VCC = 5.5 V, VI = 0 3.7 5.9 3.7 5.9 mA
ICCL VCC = 5.5 V, VI = 4.5 V 12.5 20.1 12.5 20.1 mA
§ All typical values are at VCC = 5 V, TA = 25°C.
¶ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 3

SN54ALS02A, SN54AS02, SN74ALS02A, SN74AS02
QUADRUPLE 2-INPUT POSITIVE-NOR GATES
SDAS111B – APRIL 1982 – REVISED DECEMBER 1994

switching characteristics (see Figure 1)

VCC = 4.5 V to 5.5 V,
CL = 50 pF,
FROM TO RL = 500 Ω,
PARAMETER
(INPUT) (OUTPUT) TA = MIN to MAX† UNIT
SN54AS02 SN74AS02
MIN MAX MIN MAX
tPLH 1 6 1 4.5
A or B Y ns
tPHL 1 5 1 4.5
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

 SN54ALS02A, SN54AS02, SN74ALS02A, SN74AS02
QUADRUPLE 2-INPUT POSITIVE-NOR GATES
SDAS111B – APRIL 1982 – REVISED DECEMBER 1994

PARAMETER MEASUREMENT INFORMATION

SERIES 54ALS/74ALS AND 54AS/74AS DEVICES
7V
VCC RL = R1 = R2

S1
RL
R1
From Output Test From Output Test From Output Test
Under Test Point Under Test Point Under Test Point
CL RL CL
CL R2
(see Note A) (see Note A)
(see Note A)

LOAD CIRCUIT FOR

BI-STATE LOAD CIRCUIT LOAD CIRCUIT
TOTEM-POLE OUTPUTS FOR OPEN-COLLECTOR OUTPUTS FOR 3-STATE OUTPUTS

Timing 3.5 V High-Level 3.5 V

Input 1.3 V Pulse 1.3 V 1.3 V
0.3 V 0.3 V
th tw
tsu
3.5 V 3.5 V
Data Low-Level
Input 1.3 V 1.3 V 1.3 V 1.3 V
Pulse
0.3 V 0.3 V

VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS

SETUP AND HOLD TIMES PULSE DURATIONS

3.5 V
Output
Control 1.3 V 1.3 V
(low-level
enabling) 0.3 V 3.5 V
tPZL Input 1.3 V 1.3 V
tPLZ
[3.5 V 0.3 V
tPHL
Waveform 1 tPLH
S1 Closed 1.3 V
In-Phase VOH
(see Note B) 1.3 V 1.3 V
VOL Output
tPHZ 0.3 V VOL
tPZH tPLH
VOH tPHL
Waveform 2 VOH
Out-of-Phase
S1 Open 1.3 V 0.3 V 1.3 V 1.3 V
Output
(see Note B)
[0 V (see Note C) VOL

VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS PROPAGATION DELAY TIMES

NOTES: A. CL includes probe and jig capacitance.

B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
C. When measuring propagation delay items of 3-state outputs, switch S1 is open.
D. All input pulses have the following characteristics: PRR ≤ 1 MHz, tr = tf = 2 ns, duty cycle = 50%.
E. The outputs are measured one at a time with one transition per measurement.

Figure 1. Load Circuits and Voltage Waveforms

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 5

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