74F538 [NXP]
1-of -8 decoder 3-state; 1 -8解码器三态
| 型号： | 74F538 |
| 厂家： | 
NXP |
| 描述： | 1-of -8 decoder 3-state |
| 文件： | 总10页 (文件大小：89K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
INTEGRATED CIRCUITS
74F538
1-of -8 decoder (3–state)
Product specification
IC15 Data Handbook
1989 Apr 06
Philips
Semiconductors
Philips Semiconductors
Product specification
1-of-8 decoder (3-State)
74F538
DESCRIPTION
PIN CONFIGURATION
The 74F538 decoder/demultiplexer accepts three address (A0 - A2)
input signals and decodes them to select one of eight mutually
exclusive outputs. A Polarity control (P) input determines whether
the outputs are active Low or active High. The 74F538 has 3-State
outputs, and a High signal on the Output Enables (OEn) inputs will
force all outputs to the high impedance state. Two active High (E2,
E3) and two active Low (E0, E1) inputs are available for easy
expansion to 1-of-32 decoding with four packages, or for data
demultiplexing to 1-of-8 or 1-of-16 destinations.
Q2
Q1
V
1
2
3
4
5
20
19
18
17
16
CC
Q3
Q4
A2
E0
E1
E2
E3
Q0
OE0
OE1
A0
A1
Q5
Q6
6
7
8
9
15
14
13
12
11
TYPICAL SUPPLY
TYPICAL
PROPAGATION DELAY
CURRENT
(TOTAL)
TYPE
P
74F538
8.5ns
35mA
Q7
GND 10
SF00996
ORDERING INFORMATION
COMMERCIAL RANGE
= 5V ±10%,
V
DESCRIPTION
PKG DWG #
CC
T
amb
= 0°C to +70°C
20-Pin Plastic DIP
20-Pin Plastic SOL
N74F538N
N74F538D
SOT146-1
SOT163-1
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
74F(U.L.)
LOAD VALUE
HIGH/LOW
PINS
DESCRIPTION
HIGH/LOW
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
1.0/1.0
150/40
A0 - A2
E0, E1
E2, E3
P
Address inputs
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
20µA/0.6mA
3.0mA/24mA
Enable inputs (active Low)
Enable inputs (active High)
Polarity control input
Output Enable inputs
Data outputs
OE0, OE1
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
LOGIC SYMBOL (IEEE/IEC)
6
7
17
A2
DMUX
4
5
N8
&
A0
A1
P
3
2
12
16
EN
0,8
1,8
2,8
3,8
E0
6
7
E1
15
14
13
4
0
1
0
7
E2
G
19
18
8
17
2
E3
OE0
OE1
4,8
5,8
6,8
13
14
15
16
5
&
9
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
11
7,8
V
= Pin 20
CC
3
2
1
19 18
8
9
11
GND = Pin 10
SF00997
SF00998
2
1989 Apr 06
853–1273 96267
Philips Semiconductors
Product specification
1-of-8 decoder (3-State)
74F538
LOGIC DIAGRAM
17
A2
7
A1
6
A0
16
E0
15
E1
14
E2
13
E3
12
P
4
OE0
3
2
1
19
Q3
18
Q4
8
9
11
Q7
5
OE1
Q0
Q1
Q2
Q5
Q6
V
=
=
Pin 20
Pin 10
CC
GND
SF00999
FUNCTION TABLE
INPUTS
OUTPUTS
OPERATING MODE
OE
OE
E
0
E
1
E
2
E
3
A
A
A
Q
Q
1
Q2
Q3
Q4
Q5
Q6
Q7
0
1
2
1
0
0
H
X
X
H
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
High Impedance
L
L
L
L
L
L
L
L
H
X
X
X
X
H
X
X
X
X
L
X
X
X
L
X
X
X
X
X
X
X
X
X
X
X
X
Outputs equal P input
Disable
X
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
H
L
L
L
L
H
L
L
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
H
Active High output
(P = L)
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
L
L
L
H
L
L
L
H
L
L
L
L
H
L
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
L
L
H
H
L
H
L
L
H
H
H
H
L
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
Active Low output
(P = H)
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
H
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
L
H
H
H
H
L
H
H
H
L
H
H
H = High voltage level
= Low voltage level
X = Don’t care
Z = High impedance “off” state
L
3
1989 Apr 06
Philips Semiconductors
Product specification
1-of-8 decoder (3-State)
74F538
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limits 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
V
Supply voltage
Input voltage
Input current
–0.5 to +7.0
–0.5 to +7.0
–30 to +5.0
V
V
CC
IN
I
IN
mA
V
V
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature
–0.5 to +V
48
OUT
OUT
CC
I
mA
°C
°C
T
amb
0 to +70
T
stg
–65 to +150
RECOMMENDED OPERATING CONDITIONS
LIMITS
NOM
SYMBOL
PARAMETER
UNIT
MAX
MIN
4.5
V
CC
V
IH
V
IL
Supply voltage
5.0
5.5
V
V
High-level input voltage
Low-level input voltage
Input clamp current
2.0
0.8
–18
–3.0
24
V
I
I
I
mA
mA
mA
°C
IK
High-level output current
Low-level output current
Operating free-air temperature range
OH
OL
T
amb
0
70
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
LIMITS
1
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
2
MIN
2.4
TYP
MAX
±10%V
V
V
V
V
V
CC
V
V
= MIN, V = MAX,
IL
CC
IH
V
OH
High-level output voltage
= MIN, I = MAX
OH
±5%V
2.7
3.3
0.35
0.35
–0.73
CC
±10%V
0.50
0.50
–1.2
CC
CC
V
CC
= MIN, V = MAX,
IL
V
V
Low-level output voltage
Input clamp voltage
OL
V
= MIN, I = MAX
IH
OL
±5%V
V
CC
= MIN, I = I
I IK
IK
Input current at maximum input
voltage
I
I
V
CC
= MAX, V = 7.0V
100
µA
I
I
I
High-level input current
Low-level input current
V
V
= MAX, V = 2.7V
20
µA
IH
CC
I
= MAX, V = 0.5V
–0.6
mA
IL
CC
I
Off-state output current
High-level voltage applied
I
V
= MAX, V = 2.7V
50
µA
µA
OZH
CC
CC
O
Off-state output current
Low-level voltage applied
I
I
V
= MAX, V = 0.5V
–50
OZL
O
3
Short-circuit output current
V
CC
= MAX
–60
–150
40
mA
mA
mA
mA
OS
I
I
30
35
35
CCH
I
Supply current
I
V
CC
= MAX
50
CC
CCL
50
CCZ
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value under the recommended operating conditions for the applicable type.
2. All typical values are at V = 5V, T = 25°C.
CC
amb
3. Not more than one output should be shorted at a time. For testing I , the use of high-speed test apparatus and/or sample-and-hold
OS
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, I should be performed last.
OS
4
1989 Apr 06
Philips Semiconductors
Product specification
1-of-8 decoder (3-State)
74F538
AC ELECTRICAL CHARACTERISTICS
LIMITS
T
amb
= +25°C
T
amb
= 0°C to +70°C
SYMBOL
PARAMETER
TEST CONDITIONS
UNIT
V
CC
= +5.0V
V
CC
= +5.0V ± 10%
C = 50pF, R = 500Ω
C = 50pF, R = 500Ω
L L
L
L
MIN
TYP
MAX
MIN
MAX
t
t
Propagation delay
An to Qn
5.5
3.0
8.5
7.5
13.0
12.5
5.0
3.0
14.0
13.5
ns
ns
PLH
PHL
Waveform 1, 2
Waveform 1, 2
Waveform 1, 2
Waveform 1, 2
t
t
Propagation delay
E0 or E1 to Qn
5.5
3.0
8.5
7.5
12.0
12.0
5.0
3.0
13.0
12.5
ns
ns
PLH
PHL
t
t
Propagation delay
E2 or E3 to Qn
6.5
4.0
9.0
7.0
12.5
12.5
5.5
3.5
13.5
13.0
ns
ns
PLH
PHL
t
t
Propagation delay
P to Qn
4.5
3.5
9.5
6.5
15.0
10.0
4.0
3.5
16.5
10.5
ns
ns
PLH
PHL
t
t
Output Enable time
OE0 or OE1 to Qn
Waveform 3
Waveform 4
2.5
6.5
5.5
9.5
9.5
13.5
2.0
6.0
11.0
15.0
ns
ns
PZH
PZL
t
t
Output Disable time
OE0 or OE1 to Qn
Waveform 3
Waveform 4
1.0
1.0
3.0
3.5
6.0
8.5
1.0
1.0
7.0
9.5
ns
ns
PHZ
PLZ
AC WAVEFORMS
For all waveforms, V = 1.5V.
M
An, P, En, En
V
V
M
M
An, P, En, En
V
V
M
M
t
t
PLH
PHL
t
t
PHL
PLH
Qn
V
V
M
M
Qn
V
V
M
M
SF01000
SF01001
Waveform 1. Propagation Delay for
Non-Inverting Outputs
Waveform 2. Propagation Delay for
Inverting Outputs
OEn
Qn
V
V
OEn
Qn
V
V
M
M
t
M
t
M
t
V
-0.3V
0V
OH
t
PZL
PLZ
PZH
PHZ
V
V
M
M
V
+0.3V
OL
SF01003
SF01002
Waveform 3. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
Waveform 4. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
5
1989 Apr 06
Philips Semiconductors
Product specification
1-of-8 decoder (3-State)
74F538
TEST CIRCUIT AND WAVEFORM
V
CC
t
w
AMP (V)
90%
7.0V
90%
NEGATIVE
PULSE
V
V
M
R
M
L
V
V
OUT
IN
10%
10%
PULSE
GENERATOR
D.U.T.
0V
t
t )
t
t )
THL ( f
TLH ( r
R
C
R
L
T
L
t
t )
t
t )
TLH ( r
THL ( f
AMP (V)
90%
M
90%
POSITIVE
PULSE
V
V
M
Test Circuit for 3-State Outputs
10%
10%
0V
t
w
SWITCH POSITION
TEST
SWITCH
closed
closed
open
Input Pulse Definition
t
t
PLZ
PZL
All other
DEFINITIONS:
R
L
C
L
R
T
=
=
=
Load resistor;
see AC electrical characteristics for value.
Load capacitance includes jig and probe capacitance;
see AC electrical characteristics for value.
Termination resistance should be equal to Z
pulse generators.
INPUT PULSE REQUIREMENTS
family
V
M
rep. rate
t
w
t
t
amplitude
TLH
THL
of
OUT
2.5ns
2.5ns
74F
3.0V
1.5V
1MHz
500ns
SF00777
6
1989 Apr 06
Philips Semiconductors
Product specification
1-of -8 decoder (3–state)
74F538
DIP20: plastic dual in-line package; 20 leads (300 mil)
SOT146-1
7
1989 Apar 06
Philips Semiconductors
Product specification
1-of -8 decoder (3–state)
74F538
SO20: plastic small outline package; 20 leads; body width 7.5 mm
SOT163-1
8
1989 Apar 06
Philips Semiconductors
Product specification
1-of -8 decoder (3–state)
74F538
NOTES
9
1989 Apar 06
Philips Semiconductors
Product specification
1-of -8 decoder (3–state)
74F538
Data sheet status
[1]
Data sheet
status
Product
status
Definition
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.
Righttomakechanges—PhilipsSemiconductorsreservestherighttomakechanges, withoutnotice, intheproducts, includingcircuits,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
Copyright Philips Electronics North America Corporation 1998
All rights reserved. Printed in U.S.A.
Sunnyvale, California 94088–3409
Telephone 800-234-7381
print code
Date of release: 10-98
9397-750-05133
Document order number:
Philips
Semiconductors
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