TL F 9484
54F74F158A
Quad
2-Input
Multiplexer
November 1994
54F 74F158A
Quad 2-Input Multiplexer
General Description
The 'F158A is a high speed quad 2-input multiplexer It se-
lects four bits of data from two sources using the common
Select and Enable inputs The four outputs present the se-
lected data in the inverted form The 'F158A can also gener-
ate any four of the 16 different functions of two variables
Features
Y
Guaranteed 4000V minimum ESD protection
Commercial
Military
Package
Package Description
Number
74F158APC
N16E
16-Lead (0 300 Wide) Molded Dual-In-Line
54F158ADM (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F158ASC (Note 1)
M16A
16-Lead (0 150 Wide) Molded Small Outline JEDEC
74F158ASJ (Note 1)
M16D
16-Lead (0 300 Wide) Molded Small Outline EIAJ
54F158AFM (Note 2)
W16A
16-Lead Cerpack
54F158ALM (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1
Devices also available in 13
reel Use suffix
e
SCX and SJX
Note 2
Military grade device with environmental and burn-in processing Use suffix
e
DMQB FMQB and LMQB
Logic Symbols
Connection Diagrams
TL F 9484 3
IEEE IEC
TL F 9484 5
Pin Assignment for
DIP SOIC and Flatpak
TL F 9484 1
Pin Assignment
for LCC
TL F 9484 2
TRI-STATE
is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M75 Printed in U S A
Unit Loading Fan Out
54F 74F
Pin Names
Description
U L
Input I
IH
I
IL
HIGH LOW
Output I
OH
I
OL
I
0a
I
0d
Source 0 Data Inputs
1 0 1 0
20 mA
b
0 6 mA
I
1a
I
1d
Source 1 Data Inputs
1 0 1 0
20 mA
b
0 6 mA
E
Enable Input (Active LOW)
1 0 1 0
20 mA
b
0 6 mA
S
Select Input
1 0 1 0
20 mA
b
0 6 mA
Z
a
Z
d
Inverted Outputs
50 33 3
b
1 mA 20 mA
Functional Description
The 'F158A quad 2-input multiplexer selects four bits of
data from two sources under the control of a common Se-
lect input (S) and presents the data in inverted form at the
four outputs The Enable input (E) is active LOW When E is
HIGH all of the outputs (Z) are forced HIGH regardless of
all other inputs The 'F158A is the logic implementation of a
4-pole 2-position switch where the position of the switch is
determined by the logic levels supplied to the Select input
A common use of the 'F158A is the moving of data from two
groups of registers to four common output busses The par-
ticular register from which the data comes is determined by
the state of the Select input A less obvious use is as a
function generator The 'F158A can generate four functions
of two variables with one variable common This is useful for
implementing gating functions
Truth Table
Inputs
Outputs
E
S
I
0
I
1
Z
H
X
X
X
H
L
L
L
X
H
L
L
H
X
L
L
H
X
L
H
L
H
X
H
L
H
e
HIGH Voltage Level
L
e
LOW Voltage Level
X
e
Immaterial
Z
n
e
E
c
(I
1n
S
a
I
0n
S)
Logic Diagram
TL F 9484 4
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays
2
Absolute Maximum Ratings
(Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Storage Temperature
b
65 C to
a
150 C
Ambient Temperature under Bias
b
55 C to
a
125 C
Junction Temperature under Bias
b
55 C to
a
175 C
Plastic
b
55 C to
a
150 C
V
CC
Pin Potential to
Ground Pin
b
0 5V to
a
7 0V
Input Voltage (Note 2)
b
0 5V to
a
7 0V
Input Current (Note 2)
b
30 mA to
a
5 0 mA
Voltage Applied to Output
in HIGH State (with V
CC
e
0V)
Standard Output
b
0 5V to V
CC
TRI-STATE Output
b
0 5V to
a
5 5V
Current Applied to Output
in LOW State (Max)
twice the rated I
OL
(mA)
ESD Last Passing Voltage (Min)
4000V
Note 1
Absolute maximum ratings are values beyond which the device may
be damaged or have its useful life impaired Functional operation under
these conditions is not implied
Note 2
Either voltage limit or current limit is sufficient to protect inputs
Recommended Operating
Conditions
Free Air Ambient Temperature
Military
b
55 C to
a
125 C
Commercial
0 C to
a
70 C
Supply Voltage
Military
a
4 5V to
a
5 5V
Commercial
a
4 5V to
a
5 5V
DC Electrical Characteristics
Symbol
Parameter
54F 74F
Units
V
CC
Conditions
Min
Typ
Max
V
IH
Input HIGH Voltage
2 0
V
Recognized as a HIGH Signal
V
IL
Input LOW Voltage
0 8
V
Recognized as a LOW Signal
V
CD
Input Clamp Diode Voltage
b
1 2
V
Min
I
IN
e b
18 mA
V
OH
Output HIGH
54F 10% V
CC
2 5
I
OH
e b
1 mA
Voltage
74F 10% V
CC
2 5
V
Min
I
OH
e b
1 mA
74F 5% V
CC
2 7
I
OH
e b
1 mA
V
OL
Output LOW
54F 10% V
CC
0 5
V
Min
I
OL
e
20 mA
Voltage
74F 10% V
CC
0 5
I
OL
e
20 mA
I
IH
Input HIGH
54F
20 0
m
A
Max
V
IN
e
2 7V
Current
74F
5 0
I
BVI
Input HIGH Current
54F
100
m
A
Max
V
IN
e
7 0V
Breakdown Test
74F
7 0
I
CEX
Output HIGH
54F
250
m
A
Max
V
OUT
e
V
CC
Leakage Current
74F
50
V
ID
Input Leakage
74F
4 75
V
0 0
I
ID
e
1 9 mA
Test
All Other Pins Grounded
I
OD
Output Leakage
74F
3 75
m
A
0 0
V
IOD
e
150 mV
Circuit Current
All Other Pins Grounded
I
IL
Input LOW Current
b
0 6
mA
Max
V
IN
e
0 5V
I
OS
Output Short-Circuit Current
b
60
b
150
mA
Max
V
OUT
e
0V
I
CCH
Power Supply Current
10
15
mA
Max
V
O
e
HIGH
I
CCL
Power Supply Current
15
25
mA
Max
V
O
e
LOW
3
AC Electrical Characteristics
74F
54F
74F
T
A
e a
25 C
T
A
V
CC
e
Mil
T
A
V
CC
e
Com
Symbol
Parameter
V
CC
e a
5 0V
C
L
e
50 pF
C
L
e
50 pF
Units
C
L
e
50 pF
Min
Typ
Max
Min
Max
Min
Max
t
PLH
Propagation Delay
3 0
5 5
8 5
3 0
10 5
3 0
9 5
ns
t
PHL
S to Z
n
2 5
4 5
6 5
2 5
8 0
2 5
7 0
t
PLH
Propagation Delay
2 5
4 5
6 0
2 5
8 0
2 5
7 0
ns
t
PHL
E to Z
n
2 0
4 0
6 0
2 0
7 0
2 0
6 5
t
PLH
Propagation Delay
2 5
4 0
5 9
2 5
8 5
2 5
7 0
ns
t
PHL
I
n
to Z
n
1 5
2 5
4 0
1 0
5 0
1 5
4 5
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are
defined as follows
74F
158A
S
C
X
Temperature Range Family
Special Variations
74F
e
Commercial
QB
e
Military grade device with
54F
e
Military
environmental and burn-in
processing
Device Type
X
e
Devices shipped in 13 reel
Package Code
Temperature Range
P
e
Plastic DIP
C
e
Commercial (0 C to
a
70 C)
D
e
Ceramic DIP
M
e
Military (
b
55 C to
a
125 C)
F
e
Flatpak
L
e
Leadless Chip Carrier (LCC)
S
e
Small Outline SOIC JEDEC
SJ
e
Small Outline SOIC EIAJ
4
Physical Dimensions
inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L)
NS Package Number E20A
16-Lead Ceramic Dual-In-Line Package (D)
NS Package Number J16A
5
Physical Dimensions
inches (millimeters) (Continued)
16-Lead (0 150 Wide) Molded Small Outline Package JEDEC (S)
NS Package Number M16A
6
Physical Dimensions
inches (millimeters) (Continued)
16-Lead (0 300 Wide) Molded Small Outline Package EIAJ (SJ)
NS Package Number M16D
16-Lead (0 300 Wide) Molded Dual-In-Line Package (P)
NS Package Number N16E
7
54F74F158A
Quad
2-Input
Multiplexer
Physical Dimensions
inches (millimeters) (Continued)
16-Lead Ceramic Flatpak (F)
NS Package Number W16A
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NATIONAL'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL
SEMICONDUCTOR CORPORATION As used herein
1 Life support devices or systems are devices or
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systems which (a) are intended for surgical implant
support device or system whose failure to perform can
into the body or (b) support or sustain life and whose
be reasonably expected to cause the failure of the life
failure to perform when properly used in accordance
support device or system or to affect its safety or
with instructions for use provided in the labeling can
effectiveness
be reasonably expected to result in a significant injury
to the user
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