54157 DM54157 DM74157 Quad 2-Line to 1-Line Data Selectors Multiplexers
June 1989
54157 DM54157 DM74157
Quad 2-Line to 1-Line Data Selectors Multiplexers
General Description
These data selectors multiplexers contain inverters and
drivers to supply full on-chip data selection to the four out-
put gates A separate strobe input is provided A 4-bit word
is selected from one of two sources and is routed to the four
outputs
Features
Y
Y
Y
Y
Applications
Y
Y
Y
Buffered inputs and outputs
Typical propagation time 9 ns
Typical power dissipation 150 mW
Alternate Military Aerospace device (54157) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Y
Expand any data input point
Multiplex dual data buses
Generate four functions of two variables (one variable
is common)
Source programmable counters
Connection Diagram
Dual-In-Line Package
TL F 6550 – 1
Order Number 54157DMQB 54157FMQB DM54157J DM54157W or DM74157N
See NS Package Number J16A N16E or W16A
Function Table
Inputs
Strobe
H
L
L
L
L
Select
X
L
L
H
H
A
X
L
H
X
X
B
X
X
X
L
H
L
L
H
L
H
Output Y
H
e
High Level L
e
Low Level X
e
Don’t Care
C
1995 National Semiconductor Corporation
TL F 6550
RRD-B30M105 Printed in U S A
Absolute Maximum Ratings
(Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
Input Voltage
7V
5 5V
Note
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
Operating Free Air Temperature Range
b
55 C to
a
125 C
DM54 and 54
DM74
0 C to
a
70 C
Storage Temperature Range
b
65 C to
a
150 C
Recommended Operating Conditions
Symbol
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Parameter
Min
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
b
55
DM54157
Nom
5
Max
55
08
b
0 8
DM74157
Min
4 75
2
08
b
0 8
Units
Max
5 25
V
V
V
mA
mA
C
Nom
5
45
2
16
125
0
16
70
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
V
I
V
OH
V
OL
I
I
I
IH
I
IL
I
OS
I
CC
Parameter
Input Clamp Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Current
Input Voltage
Max
Conditions
V
CC
e
Min I
I
e b
12 mA
V
CC
e
Min I
OH
e
Max
V
IL
e
Max V
IH
e
Min
V
CC
e
Min I
OL
e
Max
V
IH
e
Min V
IL
e
Max
V
CC
e
Max V
I
e
5 5V
V
CC
e
Max V
I
e
2 4V
V
CC
e
Max V
I
e
0 4V
V
CC
e
Max
(Note 2)
DM54
DM74
b
20
b
18
Min
Typ
(Note 1)
Max
b
1 5
Units
V
V
24
34
04
1
40
b
1 6
b
55
b
55
V
mA
mA
mA
mA
mA
High Level Input Current
Low Level Input Current
Short Circuit
Output Current
Supply Current
V
CC
e
Max (Note 3)
30
48
Note 1
All typicals are at V
CC
e
5V T
A
e
25 C
Note 2
Not more than one output should be shorted at a time
Note 3
I
CC
is measured with 4 5V applied to all inputs and all outputs open
2
Switching Characteristics
at V
CC
e
5V and T
A
e
25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
Parameter
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
Propagation Delay Time
Low to High Level Output
Propagation Delay Time
High to Low Level Output
From (Input)
To (Output)
Data
to Y
Data
to Y
Strobe
to Y
Strobe
to Y
Select
to Y
Select
to Y
R
L
e
400X C
L
e
15 pF
Min
Max
14
14
20
21
23
27
ns
ns
ns
ns
ns
ns
Units
Logic Diagram
157
TL F 6550 – 2
3
Physical Dimensions
inches (millimeters)
16-Lead Ceramic Dual-In-Line Package (J)
Order Number 54157W or DM54157J
NS Package Number J16A
16-Lead Molded Dual-In-Line Package (N)
Order Number DM74157N
NS Package Number N16E
5
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