PHILIPS N74F138D 1-of-8 decoder/demultiplexer Datasheet

INTEGRATED CIRCUITS
74F138
1-of-8 decoder/demultiplexer
Product specification
IC15 Data Handbook
1991 Feb 14
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
FEATURE
PIN CONFIGURATION
• Demultiplexing capability
• Multiple input enable for easy expansion
• Ideal for memory chip select decoding
• Industrial temperature range available (–40°C to +85°C)
1
16
VCC
2
15
Q0
A2
3
14
Q1
E0
4
13
Q2
E1
5
12
Q3
E2
6
11
Q4
Q7
7
10
Q5
GND
8
9
Q6
DESCRIPTION
The 74F138 decoder accepts three binary weighted inputs (A0, A1,
A2) and when enabled, provides eight mutually exclusive, active low
outputs (Q0 – Q7). The device features three enable inputs; two
active low (E0, E1) and one active high (E2). Every output will be
high unless E0 and E1 are low and E2 is high. This multiple enable
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.
A0
A1
SF00174
TYPE
TYPICAL
PROPAGATION
DELAY
TYPICAL
SUPPLY CURRENT
(TOTAL)
74F138
5.8ns
13mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%, Tamb = 0°C to +70°C
INDUSTRIAL RANGE
VCC = 5V ±10%, Tamb = –40°C to +85°C
PKG DWG #
16-pin plastic DIP
N74F138N
I74F138N
SOT38-4
16-pin plastic SO
N74F138D
I74F138D
SOT109-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
74F (U.L.) HIGH/LOW
LOAD VALUE HIGH/LOW
A0 – A2
PINS
Address inputs
DESCRIPTION
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
Data outputs
50/33
1.0mA/20mA
Q0 – Q7
NOTE:
One (1.0) FAST unit load is defined as: 20µA in the High state and 0.6mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
1
2
3
DMUX
1
2
G
A0 A1 A2
4
E0
5
E1
6
E2
15
0
0
3
0
3
1
2
2
3
14
13
12
11
4
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
4
5
15 14 13 12 11 10
9
7
6
&
5
6
7
10
9
7
VCC = Pin 16
GND = Pin 8
SF00175
February 14, 1991
SF00176
2
853–0343 01719
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
LOGIC DIAGRAM
A2
A1
A0
E0
E1
E2
3
2
1
4
5
6
15
14
13
12
11
10
9
Q1
Q2
Q3
Q4
Q5
Q6
Q0
VCC = Pin 16
GND = Pin 8
7
Q7
SF00177
FUNCTION TABLE
INPUTS
E0
OUTPUTS
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
APPLICATION
A0
A1
A2
A3
A4
74F04
H
E2
E1
E0
A0 A1 A2
74F138
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
E2
E1
E0
A0 A1 A2
E2
E1
74F138
E0
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
A0 A1 A2
74F138
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Q0
E2
E1
E0
A0 A1 A2
74F138
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
Q31
SF00178
Figure 1. Expansion of 1-of-8 Decoding
February 14, 1991
3
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
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
VCC
Supply voltage
–0.5 to +7.0
V
VIN
Input voltage
–0.5 to +7.0
V
IIN
Input current
VOUT
Voltage applied to output in High output state
IOUT
Current applied to output in Low output state
Tamb
Operating free-air
free air temperature range
Tstg
Storage temperature range
–30 to +5
mA
–0.5 to VCC
V
40
mA
Commercial range
0 to +70
°C
Industrial range
–40 to +85
°C
–65 to +150
°C
RECOMMENDED OPERATING CONDITIONS
LIMITS
SYMBOL
PARAMETER
MIN
NOM
MAX
5.0
5.5
UNIT
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
–1
mA
IOL
Low-level output current
Tambb
Operating
O
erating free-air tem
temperature
erature range
V
V
20
mA
Commercial range
0
+70
°C
Industrial range
–40
+85
°C
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
LIMITS
TEST CONDITIONS1
PARAMETER
VCC = MIN,, VIL = MAX,,
VIH = MIN
IOH
O = MAX
VCC = MIN,, VIL = MAX,,
VIH = MIN
IOL
O = MAX
MIN
±10%VCC
2.5
±5%VCC
2.7
TYP2
MAX
UNIT
V
VOH
O
High level output voltage
High-level
VOL
O
Low level output voltage
Low-level
VIK
Input clamp voltage
VCC = MIN, II = IIK
II
Input current at maximum input voltage
VCC = MAX, VI = 7.0V
IIH
High-level input current
VCC = MAX, VI = 2.7V
20
µA
IIL
Low-level input current
VCC = MAX, VI = 0.5V
–0.6
mA
IOS
Short-circuit output current3
VCC = MAX
–150
mA
20
mA
ICC
Supply
current4
(total)
3.4
±10%VCC
0.30
0.50
V
±5%VCC
0.30
0.50
V
–0.73
–1.2
V
100
µA
–60
VCC = MAX
V
13
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. Not more than one output should be shorted at a time. For testing IOS, the use of high-speed test apparatus and/or sample-and-hold
techniques are preferable in order to minimize internal heating and more accurately reflect operational values. Otherwise, prolonged shorting
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, IOS tests should be performed last.
4. Measure ICC, outputs must be open, VIN on all inputs = 4.5V.
February 14, 1991
4
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
TEST
CONDITION
PARAMETER
VCC = +5.0V ± 10%
Tamb = 0°C to +70°C
CL = 50pF
RL = 500Ω
VCC = +5.0V
Tamb = +25°C
CL = 50pF
RL = 500Ω
VCC = +5.0V ± 10%
Tamb = –40°C to +85°C
CL = 50pF
RL = 500Ω
MIN
TYP
MAX
MIN
MAX
MIN
MAX
UNIT
tPLH
tPHL
Propagation delay
An to Qn
Waveform 1, 2
3.5
4.0
5.6
6.1
7.0
8.0
3.5
4.0
8.0
9.0
3.0
3.5
8.5
9.0
ns
tPLH
tPHL
Propagation delay
E0 or E1 to Qn
Waveform 2
3.5
3.0
6.4
5.3
7.0
7.0
3.5
3.0
8.0
7.5
3.0
3.0
8.0
7.5
ns
tPLH
tPHL
Propagation delay
E2 to Qn
Waveform 1
4.0
3.5
6.2
5.6
8.0
7.5
4.0
3.5
9.0
8.5
4.0
3.5
9.5
8.5
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V
An, E2
VM
tPHL
tPLH
VM
Qn
VM
An, E0, E1
VM
VM
tPHL
VM
tPLH
VM
Qn
VM
SF00179
SF00180
Waveform 1. Propagation Delay for Inverting Outputs
Waveform 2.
Propagation Delay for Non-Inverting Outputs
TEST CIRCUIT AND WAVEFORMS
VCC
VIN
tw
90%
NEGATIVE
PULSE
VM
D.U.T.
RT
CL
RL
AMP (V)
VM
10%
VOUT
PULSE
GENERATOR
90%
10%
tTHL (tf )
tTLH (tr )
tTLH (tr )
tTHL (tf )
0V
AMP (V)
90%
90%
POSITIVE
PULSE
Test Circuit for Totem-Pole Outputs
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.
VM
VM
10%
10%
tw
0V
Input Pulse Definition
INPUT PULSE REQUIREMENTS
family
amplitude VM
74F
3.0V
1.5V
rep. rate
tw
tTLH
tTHL
1MHz
500ns
2.5ns
2.5ns
SF00006
February 14, 1991
5
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
DIP16: plastic dual in-line package; 16 leads (300 mil)
1991 Feb 14
6
SOT38-4
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
SO16: plastic small outline package; 16 leads; body width 3.9 mm
1991 Feb 14
7
SOT109-1
Philips Semiconductors
Product specification
1-of-8 decoder/demultiplexer
74F138
Data sheet status
Data sheet
status
Product
status
Definition [1]
Objective
specification
Development
This data sheet contains the design target or goal specifications for product development.
Specification may change in any manner without notice.
Preliminary
specification
Qualification
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.
Product
specification
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.
[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.
 Copyright Philips Electronics North America Corporation 1998
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:
yyyy mmm dd
8
Date of release: 10-98
9397-750-05076
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