Page 1
INTEGRATED CIRCUITS
74F138
1-of-8 decoder/demultiplexer
Product specification
IC15 Data Handbook
1991 Feb 14
Page 2
Philips Semiconductors Product specification
74F1381-of-8 decoder/demultiplexer
FEA TURE
PIN CONFIGURATION
• Demultiplexing capability
1
•Multiple input enable for easy expansion
•Ideal for memory chip select decoding
•Industrial temperature range available (–40°C to +85°C)
DESCRIPTION
The 74F138 decoder accepts three binary weighted inputs (A0, A1,
A2) and when enabled, provides eight mutually exclusive, active low
outputs (Q
active low (E
high unless E
0 – Q7). The device features three enable inputs; two
0, E1) and one active high (E2). Every output will be
0 and E1 are low and E2 is high. This multiple enable
A0
2
A1
3
A2
4
0
E
1
5
E
6
E2
Q
7
function allows easy parallel expansion of the device to 1-of-32
(5 lines to 32 lines) decoder with just four 74F138s and one inverter
(see Figure 1). The device can be used as an eight output
demultiplexer by using one of the active low enable inputs as the
data input and the remaining enable inputs as strobes. Enable
inputs not used must be permanently tied to their appropriate active
high or active low state.
TYPE
74F138 5.8ns 13mA
TYPICAL
PROPAGATION
DELAY
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
16-pin plastic DIP N74F138N I74F138N SOT38-4
16-pin plastic SO N74F138D I74F138D SOT109-1
COMMERCIAL RANGE
VCC = 5V ±10%, T
= 0°C to +70°C
amb
VCC = 5V ±10%, T
INDUSTRIAL RANGE
= –40°C to +85°C
amb
16
V
CC
15
Q
0
14
1
Q
13
Q2
Q3
12
Q4
11
107
Q5
98GND Q6
SF00174
TYPICAL
SUPPLY CURRENT
(TOTAL)
PKG DWG #
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS DESCRIPTION 74F (U.L.) HIGH/LOW LOAD VALUE HIGH/LOW
A0 – A2 Address inputs 1.0/1.0 20µA/0.6mA
E0, E1 Enable inputs (active Low) 1.0/1.0 20µA/0.6mA
E2 Enable input (active High) 1.0/1.0 20µA/0.6mA
Q0 – Q7 Data outputs 50/33 1.0mA/20mA
NOTE:
One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
4
5
6
VCC = Pin 16
GND = Pin 8
123
E0
E1
E2
Q114Q0
15
A1 A2A0
Q2 Q3 Q4 Q5
13 12 11 10
Q69Q7
7
SF00175
IEC/IEEE SYMBOL
1
2
3
4
5
6
0
2
DMUX
G
&
0
0
1
3
2
3
4
5
6
7
15
14
13
12
11
10
9
7
SF00176
February 14, 1991 853–0343 01719
2
Page 3
Philips Semiconductors Product specification
74F1381-of-8 decoder/demultiplexer
LOGIC DIAGRAM
3
A2
2
A1
1
A0
4
0
E
5
1
E
6
E2
15 14 13 12 11 10 9 7
0Q1Q2Q3Q4Q5Q6Q7
Q
V
= Pin 16
CC
GND = Pin 8
FUNCTION TABLE
INPUTS OUTPUTS
E0 E1 E2 A0 A1 A2 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
H X X X X X H H H H H H H H
X H X X X X H H H H H H H H
X X L X X X H H H H H H H H
L L H L L L L H H H H H H H
L L H H L L H L H H H H H H
L L H L H L H H L H H H H H
L L H H H L H H H L H H H H
L L H L L H H H H H L H H H
L L H H L H H H H H H L H H
L L H L H H H H H H H H L H
L L H H H H H H H H H H H L
NOTES:
H = High voltage level
L = Low voltage level
X = Don’t care
SF00177
APPLICATION
A0
A1
A2
A3
A4
February 14, 1991
H
A0 A1 A2
E2
E1
74F138
E0
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
A0 A1 A2
E2
E1
74F138
E0
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
E2
E1
E0
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Figure 1. Expansion of 1-of-8 Decoding
3
A0 A1 A2
74F138
74F04
A0 A1 A2
E2
E1
74F138
E0
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Q31Q0
SF00178
Page 4
Philips Semiconductors Product specification
T
Operating free-air temperature range
SYMBOL
PARAMETER
UNIT
T
O erating free-air tem erature range
SYMBOL
PARAMETER
TEST CONDITIONS
1
UNIT
VOHHigh-level output voltage
CC
,
IL
,
I
MAX
VOLLow-level output voltage
CC
,
IL
,
I
MAX
74F1381-of-8 decoder/demultiplexer
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
I
IN
V
I
OUT
T
CC
IN
OUT
amb
stg
Supply voltage –0.5 to +7.0 V
Input voltage –0.5 to +7.0 V
Input current –30 to +5 mA
Voltage applied to output in High output state –0.5 to V
Current applied to output in Low output state 40 mA
p
p
Storage temperature range –65 to +150 °C
RECOMMENDED OPERATING CONDITIONS
V
V
V
I
I
I
CC
IH
IL
IK
OH
OL
amb
Supply voltage 4.5 5.0 5.5 V
High-level input voltage 2.0 V
Low-level input voltage 0.8 V
Input clamp current –18 mA
High-level output current –1 mA
Low-level output current 20 mA
p
p
PARAMETER RATING UNIT
CC
V
Commercial range 0 to +70 °C
Industrial range –40 to +85 °C
LIMITS
MIN NOM MAX
Commercial range 0 +70 °C
Industrial range –40 +85 °C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
MIN TYP2MAX
p
p
V
IK
I
I
I
IH
I
IL
I
OS
I
CC
Input clamp voltage VCC = MIN, II = I
Input current at maximum input voltage VCC = MAX, VI = 7.0V 100 µA
High-level input current VCC = MAX, VI = 2.7V 20 µA
Low-level input current VCC = MAX, VI = 0.5V –0.6 mA
Short-circuit output current
3
Supply current4 (total) VCC = MAX 13 20 mA
VCC = MIN, VIL = MAX,
VIH = MIN
VCC = MIN, VIL = MAX,
VIH = MIN
IK
VCC = MAX –60 –150 mA
OH
OL
=
=
±10%V
±5%V
±10%V
±5%V
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. Not more than one output should be shorted at a time. For testing I
= 5V, T
CC
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
amb
= 25°C.
, the use of high-speed test apparatus and/or sample-and-hold
OS
of a high output may raise the chip temperature well above normal and thereby cause invalid readings in other parameter tests. In any
sequence of parameter tests, I
4. Measure I
, outputs must be open, VIN on all inputs = 4.5V .
CC
tests should be performed last.
OS
2.5 V
CC
2.7 3.4 V
CC
CC
CC
0.30 0.50 V
0.30 0.50 V
–0.73 –1.2 V
February 14, 1991
4
Page 5
Philips Semiconductors Product specification
74F1381-of-8 decoder/demultiplexer
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL PARAMETER
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Propagation delay
An to Qn
Propagation delay
E0 or E1 to Qn
Propagation delay
E2 to Qn
AC WAVEFORMS
For all waveforms, VM = 1.5V
TEST
CONDITION
Waveform 1, 2
Waveform 2
Waveform 1
VCC = +5.0V
T
= +25°C
amb
C
= 50pF
L
R
= 500Ω
L
MIN TYP MAX MIN MAX MIN MAX
3.5
5.6
4.0
6.1
3.5
6.4
3.0
5.3
4.0
6.2
3.5
5.6
VCC = +5.0V ± 10%
T
amb
7.0
8.0
7.0
7.0
8.0
7.5
3.5
4.0
3.5
3.0
4.0
3.5
= 0°C to +70°C
C
= 50pF
L
R
= 500Ω
L
8.0
9.0
8.0
7.5
9.0
8.5
VCC = +5.0V ± 10%
T
= –40°C to +85°C
amb
C
= 50pF
L
R
= 500Ω
L
3.0
3.5
3.0
3.0
4.0
3.5
8.5
9.0
8.0
7.5
9.5
8.5
UNIT
ns
ns
ns
An, E2
Qn
V
M
t
PHL
V
M
t
PLH
V
M
V
M
Waveform 1. Propagation Delay for Inverting Outputs
TEST CIRCUIT AND WAVEFORMS
V
CC
V
PULSE
GENERATOR
IN
R
T
Test Circuit for Totem-Pole Outputs
DEFINITIONS:
= Load resistor;
R
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
R
L
SF00179
of
OUT
NEGATIVE
PULSE
POSITIVE
PULSE
An, E
0, E1
Qn
V
M
t
PHL
V
M
t
PLH
V
M
V
M
Waveform 2. Propagation Delay for Non-Inverting Outputs
t
90%
10%
V
M
10%
t
THL (tf
t
TLH (tr
90%
V
M
w
10%
)
)
t
)
TLH (tr
t
)
THL (tf
90%
t
w
90%
V
M
V
M
10%
Input Pulse Definition
family
74F
INPUT PULSE REQUIREMENTS
V
amplitude
3.0V
M
1.5V
rep. rate
1MHz 500ns
t
w
t
TLHtTHL
2.5ns 2.5ns
SF00180
AMP (V)
0V
AMP (V)
0V
February 14, 1991
SF00006
5
Page 6
Philips Semiconductors Product specification
74F1381-of-8 decoder/demultiplexer
DIP16: plastic dual in-line package; 16 leads (300 mil) SOT38-4
1991 Feb 14
6
Page 7
Philips Semiconductors Product specification
74F1381-of-8 decoder/demultiplexer
SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1
1991 Feb 14
7
Page 8
Philips Semiconductors Product specification
74F1381-of-8 decoder/demultiplexer
Data sheet status
Data sheet
status
Objective
specification
Preliminary
specification
Product
specification
Product
status
Development
Qualification
Production
Definition
This data sheet contains the design target or goal specifications for product development.
Specification 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 chages 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.
[1]
[1] Please consult the most recently issued datasheet before initiating or completing a design.
Definitions
Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one
or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or
at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended
periods may affect device reliability.
Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips
Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or
modification.
Disclaimers
Life support — These products are not designed for use in life support appliances, devices or systems where malfunction of these products can
reasonably be expected to result in personal injury . Philips Semiconductors customers using or selling these products for use in such applications
do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.
Right to make changes — Philips Semiconductors reserves 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.
Philips Semiconductors
811 East Arques Avenue
P.O. Box 3409
Sunnyvale, California 94088–3409
Telephone 800-234-7381
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
print code Date of release: 10-98
Document order number: 9397-750-05076
yyyy mmm dd
8
Loading...