PHILIPS 74ALS20

INTEGRATED CIRCUITS
74ALS20A
Dual 4-Input NAND gate
Product specification
IC05 Data Handbook
1996 Jul 01
Philips Semiconductors
Product specification
Dual 4-input NAND gate
TYPE
74ALS20A
TYPICAL
PROPAGATION DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
4.5ns
0.65mA
74ALS20A
PIN CONFIGURATION
2
13 2D
3
12 2C
1C
4
11 NC
1D
5
10 2B
1Y
6
9
2A
GND
7
8
2Y
DRAWING
NUMBER
14-pin plastic DIP
74ALS20AN
SOT27-1
14-pin plastic SO
74ALS20AD
SOT108-1
14 VCC
1B
ORDER CODE
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
1
NC
ORDERING INFORMATION
DESCRIPTION
1A
SC00024
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
74ALS (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
Data inputs
1.0/1.0
20µA/0.1mA
Data outputs
20/80
0.4mA/8mA
PINS
DESCRIPTION
nA, nB, nC, nD
nY
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
&
1
1
2
4
5
9
10
12
13
2
6
4
5
1A 1B 1C 1D 2A 2B 2C 2D
9
1Y 2Y
10
8
12
6
8
13
VCC = Pin 14
GND = Pin 7
SF00068
SC00025
LOGIC DIAGRAM
FUNCTION TABLE
INPUTS
1A
1B
1C
1D
2A
2B
2C
VCC = Pin 14
GND = Pin 7
1996 Jul 01
2D
1
2
OUTPUT
nA
nB
nC
nD
nY
H
H
H
H
L
5
L
X
X
X
H
9
10
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
4
12
6
8
1Y
2Y
13
H = High voltage level
L = Low voltage level
X = Don’t care
SC00026
2
853–0859 01670
Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ALS20A
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.)
PARAMETER
SYMBOL
RATING
UNIT
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
–30 to +5
mA
–0.5 to VCC
V
VOUT
Voltage applied to output in High output state
IOUT
Current applied to output in Low output state
Tamb
Operating free-air temperature range
Tstg
Storage temperature range
16
mA
0 to +70
°C
–65 to +150
°C
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
UNIT
MIN
NOM
MAX
5.0
5.5
VCC
Supply voltage
4.5
VIH
High-level input voltage
2.0
VIL
Low-level input voltage
0.8
V
IIk
Input clamp current
–18
mA
IOH
High-level output current
–0.4
mA
IOL
Low-level output current
8
mA
+70
°C
Tamb
Operating free-air temperature range
V
V
0
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
LIMITS
TEST CONDITIONS1
PARAMETER
MIN
VOH
High-level output voltage
VCC±10%, VIL = MAX, VIH = MIN, IOH = –0.4mA
VOL
O
Low level output voltage
Low-level
VCC = MIN,, VIL = MAX,,
VIH = MIN
VIK
Input clamp voltage
VCC = MIN, II = IIK
II
Input current at maximum input voltage
IIH
TYP2
UNIT
MAX
VCC – 2
V
IOL = 4mA
0.25
0.40
V
IOL = 8mA
0.35
0.50
V
–0.73
–1.5
V
VCC = MAX, VI = 7.0V
0.1
mA
High-level input current
VCC = MAX, VI = 2.7V
20
µA
IIL
Low-level input current
VCC = MAX, VI = 0.5V
–0.1
mA
IO
current3
ICC
Output
Supply current (total)
VCC = MAX, VO = 2.25V
ICCH
ICCL
VCC = MAX
–112
mA
VI = 0V
–30
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 VCC = 5V, Tamb = 25°C.
3. The output conditions have been chosen to produce a current that closely approximate one half of the true short-circuit output current, IOS.
1996 Jul 01
3
Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ALS20A
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
tPLH
tPHL
PARAMETER
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
TEST CONDITION
Propagation delay
nA, nB, nC, nD to nY
Waveform 1
MIN
MAX
2.0
3.0
11.0
10.0
UNIT
ns
AC WAVEFORMS
For all waveforms, VM = 1.3V.
nA, nB, nC, nD
VM
VM
tPHL
tPLH
VM
nY
VM
SC00027
Waveform 1. Propagation Delay for Data to Output
TEST CIRCUIT AND WAVEFORMS
VCC
NEGATIVE
PULSE
VIN
CL
RL
AMP (V)
VM
10%
D.U.T.
RT
90%
VM
VOUT
PULSE
GENERATOR
tw
90%
10%
tTHL (tff)
tTLH (tr )
tTLH (tr )
tTHL (tf )
0.3V
AMP (V)
90%
Test Circuit for Totem-pole Outputs
POSITIVE
PULSE
90%
VM
VM
10%
10%
tw
0.3V
Input Pulse Definition
DEFINITIONS:
RL = Load resistor;
see AC electrical characteristics for value.
CL = Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
INPUT PULSE REQUIREMENTS
Family
Amplitude VM
74ALS
3.5V
1.3V
Rep.Rate
tw
tTLH
tTHL
1MHz
500ns
2.0ns
2.0ns
SC00005
1996 Jul 01
4
Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ALS20A
DIP14: plastic dual in-line package; 14 leads (300 mil)
1996 Jul 01
5
SOT27-1
Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ALS20A
SO14: plastic small outline package; 14 leads; body width 3.9 mm
1996 Jul 01
6
SOT108-1
Philips Semiconductors
Product specification
Dual 4-input NAND gate
74ALS20A
DEFINITIONS
Data Sheet Identification
Product Status
Definition
Objective Specification
Formative or in Design
This data sheet contains the design target or goal specifications for product development. Specifications
may change in any manner without notice.
Preliminary Specification
Preproduction Product
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.
Product Specification
Full Production
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.
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 APPLICATIONS
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.
 Copyright Philips Electronics North America Corporation 1997
All rights reserved. Printed in U.S.A.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
print code
Document order number:
1996 Jul 01
7
Date of release: 05-96