Page 1
74ALS139
Dual 1-of-4 decoder/demultiplexer
Product specification 1991 Feb 08
INTEGRATED CIRCUITS
IC05 Data Handbook
Page 2
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
2
1991 Feb 08 853–1426 01670
FEA TURES
•Demultiplexing capability
•Two independent 1-of-4 decoders
•Multi-function capability
DESCRIPTION
The 74ALS139 is a dual 1-of-4 decoder/demultiplexer. This device
has two independent decoders, each accepting two binary weighted
inputs (A
0n
, A1n) and providing four mutually exclusive active-Low
outputs (Q
0n–Q3n). Each decoder has an active-Low enable (E).
When E
is High, every output is forced High. The enable can be
used as the data input for a 1-of-4 demultiplexer application.
TYPE
TYPICAL
PROPAGATION DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74ALS139 6.0ns 4mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION COMMERCIAL RANGE
V
CC
= 5V ±10%,
T
amb
= 0°C to +70°C
DRAWING
NUMBER
16-pin plastic DIP 74ALS139N SOT38-4
16-pin plastic SO 74ALS139D SOT109-1
PIN CONFIGURATION
16
15
14
13
12
11
107
6
5
4
3
2
1
Q
3a
V
CC
Q0b
Q1b
Q2b
A1b
E
b
A0b
E
a
A0a
Q
2a
A1a
Q
0a
Q
1a
98GND Q3b
SF00129
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS DESCRIPTION
74ALS (U.L.)
HIGH/LOW
LOAD VALUE
HIGH/LOW
A0n, A1n Address inputs 1.0/1.0 20µA/0.1mA
Ea, Eb Enable inputs (active-Low) 1.0/1.0 20µA/0.1mA
Q0n, Q1n 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
A0a A1aEa
123
V
CC
= Pin 16
GND = Pin 8
SF00130
Q0a Q1a Q2a
456
Q3a
7
A0b A1bEb
15 14 13
Q0b Q1b Q2b
12 11 10
Q3b
9
DECODER a DECODER b
IEC/IEEE SYMBOL
SF00131
DEMUX
2
3
1
14
13
15
4
5
6
7
12
11
10
9
0
1
0
1
2
G
0
3
3
Page 3
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
3
LOGIC DIAGRAM
SF00132
123
E
a A0a A1a
4567
Q
0a Q1a Q2a Q3a
V
CC
= Pin 16
GND = Pin 8
15 14 13
E
b A0b A1b
12 11 10 9
Q
0b Q1b Q2b Q3b
FUNCTION TABLE
INPUTS OUTPUTS
E A0 A1 Q0 Q1 Q2 Q3
H X X H H H H
L L LLHHH
LHLHLHH
LLHHHLH
LHHHHHL
H = High voltage level
L = Low voltage level
X = Don’t care
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
PARAMETER RATING UNIT
V
CC
Supply voltage –0.5 to +7.0 V
V
IN
Input voltage –0.5 to +7.0 V
I
IN
Input current –30 to +5 mA
V
OUT
Voltage applied to output in High output state –0.5 to V
CC
V
I
OUT
Current applied to output in Low output state 16 mA
T
amb
Operating free-air temperature range 0 to +70 °C
T
stg
Storage temperature range –65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5.0 5.5 V
V
IH
High-level input voltage 2.0 V
V
IL
Low-level input voltage 0.8 V
I
Ik
Input clamp current –18 mA
I
OH
High-level output current –0.4 mA
I
OL
Low-level output current 8 mA
T
amb
Operating free-air temperature range 0 +70 °C
Page 4
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
4
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
SYMBOL
PARAMETER
TEST CONDITIONS
1
MIN TYP2MAX
UNIT
V
OH
High-level output voltage VCC±10%, VIL = MAX, VIH = MIN, IOH = –0.4mA V
CC
– 2 V
p
VCC = MIN, VIL = MAX,
I
OL
= 4mA 0.25 0.40 V
VOLLow-level output voltage
CC
,
IL
,
VIH = MIN
I
OL
= 8mA 0.35 0.50 V
V
IK
Input clamp voltage VCC = MIN, II = I
IK
–0.73 –1.5 V
I
I
Input current at maximum input voltage VCC = MAX, VI = 7.0V 0.1 mA
I
IH
High-level input current VCC = MAX, VI = 2.7V 20 µA
I
IL
Low-level input current VCC = MAX, VI = 0.5V –0.1 mA
I
O
Output current
3
VCC = MAX, VO = 2.25V -30 –112 mA
I
CC
Supply current (total) VCC = MAX 4.0 7.0 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
CC
= 5V, T
amb
= 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, I
OS
.
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL PARAMETER TEST CONDITION
T
amb
= 0°C to +70°C
V
CC
= +5.0V ± 10%
C
L
= 50pF, RL = 500Ω
UNIT
MIN MAX
t
PLH
t
PHL
Propagation delay
An
to Qn
Waveform 1, 2
3.0
3.0
10.0
12.0
ns
t
PLH
t
PHL
Propagation delay
E
n to Qn
Waveform 2
3.0
3.0
8.0
8.0
ns
AC WAVEFORMS
For all waveforms, VM = 1.3V .
V
M
V
M
V
M
V
M
Qn
An
t
PHL
t
PLH
SF00133
Waveform 1. Propagation Delay for Inverting Outputs
V
M
V
M
V
M
V
M
Qn
An, E
n
t
PHL
t
PLH
SF00134
Waveform 2. Propagation Delay for Non-inverting Outputs
Page 5
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
5
TEST CIRCUIT AND WAVEFORMS
t
w
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
90%
V
M
10%
NEGATIVE
PULSE
POSITIVE
PULSE
t
w
AMP (V)
0.3V
0.3V
t
THL (tf
f
)
INPUT PULSE REQUIREMENTS
Rep.Rate
t
w
t
TLHtTHL
1MHz
500ns
2.0ns 2.0ns
Input Pulse Definition
V
CC
Family
74ALS
D.U.T.
PULSE
GENERATOR
R
L
C
L
R
T
V
IN
V
OUT
Test Circuit for Totem-pole Outputs
DEFINITIONS:
R
L
= Load resistor;
see AC electrical characteristics for value.
CL= Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
R
T
= Termination resistance should be equal to Z
OUT
of
pulse generators.
t
THL (tf
)
t
TLH (tr
)
t
TLH (tr
)
AMP (V)
Amplitude
3.5V
1.3V
V
M
SC00005
Page 6
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
6
DIP16: plastic dual in-line package; 16 leads (300 mil) SOT38-4
Page 7
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
7
SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
Page 8
Philips Semiconductors Product specification
74ALS139Dual 1-of-4 decoder/demultiplexer
1991 Feb 08
8
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.
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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
DEFINITIONS
Data Sheet Identification Product Status Definition
Objective Specification
Preliminary Specification
Product Specification
Formative or in Design
Preproduction Product
Full Production
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 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.
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