Page 1
INTEGRATED CIRCUITS
74ALS20A
Dual 4-Input NAND gate
Product specification 1996 Jul 01
IC05 Data Handbook
Page 2
Philips Semiconductors Product specification
74ALS20ADual 4-input NAND gate
TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL
SUPPLY CURRENT
74ALS20A 4.5ns 0.65mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION COMMERCIAL RANGE
V
= 5V ±10%,
CC
T
= 0°C to +70°C
amb
(TOTAL)
DRAWING
NUMBER
PIN CONFIGURATION
11A
2
1B
3
NC
4
1C
5
1D
6
1Y
GND 2Y
14
V
CC
13
2D
12
2C
11
NC
10
2B
9
2A
87
14-pin plastic DIP 74ALS20AN SOT27-1
14-pin plastic SO 74ALS20AD SOT108-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS DESCRIPTION
74ALS (U.L.)
HIGH/LOW
nA, nB, nC, nD Data inputs 1.0/1.0 20µA/0.1mA
nY Data outputs 20/80 0.4mA/8mA
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
12459101213
1A 1B 1C 1D 2A 2B 2C 2D
IEC/IEEE SYMBOL
1
2
4
5
&
LOAD VALUE
HIGH/LOW
SC00024
6
VCC = Pin 14
GND = Pin 7
LOGIC DIAGRAM
VCC = Pin 14
GND = Pin 7
1Y 2Y
68
SC00025
FUNCTION TABLE
9
10
12
13
8
SF00068
INPUTS OUTPUT
1
1A
2
1B
4
1C
5
1D
9
2A
10
2B
12
2C
13
2D
6
1Y
8
2Y
SC00026
nA nB nC nD nY
H H H H L
L X X X H
X L X X H
X X L X H
X X X L H
H = High voltage level
L = Low voltage level
X = Don’t care
1996 Jul 01 853–0859 01670
2
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Philips Semiconductors Product specification
SYMBOL
PARAMETER
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
1
UNIT
VOLLow-level output voltage
CC
,
IL
,
ICCSupply current (total)
V
MAX
74ALS20ADual 4-input NAND gate
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
V
V
V
I
OUT
I
OUT
T
amb
T
Supply voltage –0.5 to +7.0 V
CC
Input voltage –0.5 to +7.0 V
IN
Input current –30 to +5 mA
IN
Voltage applied to output in High output state –0.5 to V
Current applied to output in Low output state 16 mA
Operating free-air temperature range 0 to +70 °C
Storage temperature range –65 to +150 °C
stg
RECOMMENDED OPERATING CONDITIONS
V
V
V
I
I
OH
I
OL
T
amb
Supply voltage 4.5 5.0 5.5 V
CC
High-level input voltage 2.0 V
IH
Low-level input voltage 0.8 V
IL
Input clamp current –18 mA
Ik
High-level output current –0.4 mA
Low-level output current 8 mA
Operating free-air temperature range 0 +70 °C
PARAMETER RATING UNIT
CC
V
LIMITS
MIN NOM MAX
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
MIN TYP2MAX
V
V
I
I
I
High-level output voltage VCC±10%, VIL = MAX, VIH = MIN, IOH = –0.4mA V
OH
I
= 4mA 0.25 0.40 V
p
Input clamp voltage VCC = MIN, II = I
IK
I
Input current at maximum input voltage VCC = MAX, VI = 7.0V 0.1 mA
I
High-level input current VCC = MAX, VI = 2.7V 20 µA
IH
Low-level input current VCC = MAX, VI = 0.5V –0.1 mA
IL
O
Output current
3
pp
VCC = MIN, VIL = MAX,
VIH = MIN
IK
VCC = MAX, VO = 2.25V –30 –112 mA
I
CCH
I
CCL
CC
=
OL
I
= 8mA 0.35 0.50 V
OL
VI = 0V 0.3 0.4 mA
VI = 4.5V 1.0 1.5 mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V
3. The output conditions have been chosen to produce a current that closely approximate one half of the true short-circuit output current, I
= 5V, T
CC
amb
= 25°C.
– 2 V
CC
–0.73 –1.5 V
OS
.
1996 Jul 01
3
Page 4
Philips Semiconductors Product specification
74ALS20ADual 4-input NAND gate
AC ELECTRICAL CHARACTERISTICS
LIMITS
T
= 0°C to +70°C
amb
V
SYMBOL PARAMETER TEST CONDITION
t
t
PLH
PHL
Propagation delay
nA, nB, nC, nD to nY
Waveform 1
AC WAVEFORMS
For all waveforms, VM = 1.3V.
= +5.0V ± 10%
CC
C
= 50pF, RL = 500Ω
L
MIN MAX
2.0
3.0
11.0
10.0
UNIT
ns
nA, nB, nC, nD
nY
V
M
t
PHL
V
M
t
PLH
V
V
M
Waveform 1. Propagation Delay for Data to Output
TEST CIRCUIT AND WAVEFORMS
V
CC
V
PULSE
GENERATOR
IN
R
T
Test Circuit for Totem-pole Outputs
DEFINITIONS:
R
= Load resistor;
L
see AC electrical characteristics for value.
= Load capacitance includes jig and probe capacitance;
C
L
see AC electrical characteristics for value.
R
= Termination resistance should be equal to Z
T
pulse generators.
D.U.T.
V
OUT
C
L
M
SC00027
t
NEGATIVE
PULSE
R
L
POSITIVE
PULSE
90%
10%
V
M
10%
t
THL (tf
t
TLH (tr
90%
V
M
w
V
M
10%
)
f
)
t
)
TLH (tr
t
)
THL (tf
90%
V
M
t
w
90%
10%
AMP (V)
0.3V
AMP (V)
0.3V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
V
Rep.Rate
M
3.5V
1.3V
1MHz
t
w
500ns
t
TLHtTHL
2.0ns 2.0ns
SC00005
OUT
of
Family
Amplitude
74ALS
1996 Jul 01
4
Page 5
Philips Semiconductors Product specification
74ALS20ADual 4-input NAND gate
DIP14: plastic dual in-line package; 14 leads (300 mil) SOT27-1
1996 Jul 01
5
Page 6
Philips Semiconductors Product specification
74ALS20ADual 4-input NAND gate
SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
1996 Jul 01
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Page 7
Philips Semiconductors Product specification
74ALS20ADual 4-input NAND gate
DEFINITIONS
Data Sheet Identification Product Status Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
Philips Semiconductors and Philips Electronics North America Corporation reserve the right to make changes, without notice, in the products,
including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright,
or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified. Applications that are described herein for any of these products are for illustrative purposes
only. Philips Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing
or modification.
LIFE SUPPORT APPLICA TIONS
Philips Semiconductors and Philips Electronics North America Corporation Products are not designed for use in life support appliances, devices,
or systems where malfunction of a Philips Semiconductors and Philips Electronics North America Corporation Product can reasonably be expected
to result in a personal injury. Philips Semiconductors and Philips Electronics North America Corporation customers using or selling Philips
Semiconductors and Philips Electronics North America Corporation Products for use in such applications do so at their own risk and agree to fully
indemnify Philips Semiconductors and Philips Electronics North America Corporation for any damages resulting from such improper use or sale.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips
Semiconductors reserves the right to make changes at any time without notice in order to improve design
and supply the best possible product.
This data sheet contains Final Specifications. Philips Semiconductors reserves the right to make changes
at any time without notice, in order to improve design and supply the best possible product.
Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
print code Date of release: 05-96
Document order number:
1996 Jul 01
7
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