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Электронный компонент: 54154DMQB

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TL F 6548
54154DM54154DM74154
4-Line
to
16-Line
DecodersDemultiplexers
June 1989
54154 DM54154 DM74154
4-Line to 16-Line Decoders Demultiplexers
General Description
Each or these 4-line-to-16-line decoders utilizes TTL circuit-
ry to decode four binary-coded inputs into one of sixteen
mutually exclusive outputs when both the strobe inputs G1
and G2 are low The demultiplexing function is performed
by using the 4 input lines to address the output line passing
data from one of the strobe inputs with the other strobe
input low When either strobe input is high all outputs are
high These demultiplexers are ideally suited for implement-
ing high-performance memory decoders All inputs are buff-
ered and input clamping diodes are provided to minimize
transmission-line effects and thereby simplify system de-
sign
Features
Y
Decodes 4 binary-coded inputs into one of 16 mutually
exclusive outputs
Y
Performs the demultiplexing function by distributing data
from one input line to any one of 16 outputs
Y
Input clamping diodes simplify system design
Y
High fan-out low-impedance totem-pole outputs
Y
Typical propagation delay
3 levels of logic 19 ns
Strobe 18 ns
Y
Typical power dissipation 170 mW
Y
Alternate Military Aerospace device (54154) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
TL F 6548 1
Order Number 54154DMQB 54154FMQB DM54154J or DM74154N
See NS Package Number J24A N24A or W24C
C1995 National Semiconductor Corporation
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
7V
Input Voltage
5 5V
Operating Free Air Temperature Range
DM54 and 54
b
55 C to
a
125 C
DM74
0 C to
a
70 C
Storage Temperature Range
b
65 C to
a
150 C
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
Recommended Operating Conditions
Symbol
Parameter
DM54154
DM74154
Units
Min
Nom
Max
Min
Nom
Max
V
CC
Supply Voltage
4 5
5
5 5
4 75
5
5 25
V
V
IH
High Level Input Voltage
2
2
V
V
IL
Low Level Input Voltage
0 8
0 8
V
I
OH
High Level Output Current
b
0 8
b
0 8
mA
I
OL
Low Level Output Current
16
16
mA
T
A
Free Air Operating Temperature
b
55
125
0
70
C
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
V
I
Input Clamp Voltage
V
CC
e
Min I
I
e b
12 mA
b
1 5
V
V
OH
High Level Output
V
CC
e
Min I
OH
e
Max
2 4
3 2
V
Voltage
V
IL
e
Max V
IH
e
Min
V
OL
Low Level Output
V
CC
e
Min I
OL
e
Max
0 25
0 4
V
Voltage
V
IH
e
Min V
IL
e
Max
I
I
Input Current
Max
V
CC
e
Max V
I
e
5 5V
1
mA
Input Voltage
I
IH
High Level Input Current
V
CC
e
Max V
I
e
2 4V
40
m
A
I
IL
Low Level Input Current
V
CC
e
Max V
I
e
0 4V
b
1 6
mA
I
OS
Short Circuit
V
CC
e
Max
DM54
b
20
b
55
mA
Output Current
(Note 2)
DM74
b
18
b
57
I
CC
Supply Current
V
CC
e
Max
DM54
34
49
mA
(Note 3)
DM74
34
56
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 all outputs open and all inputs grounded
Switching Characteristics
at V
CC
e
5V and T
A
e
25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
R
L
e
400X C
L
e
15 pF
Units
To (Output)
Min
Max
t
PLH
Propagation Delay Time
Data to
36
ns
Low to High Level Output
Output
t
PHL
Propagation Delay Time
Data to
33
ns
High to Low Level Output
Output
t
PLH
Propagation Delay Time
Strobe to
30
ns
Low to High Level Output
Output
t
PHL
Propagation Delay Time
Strobe to
27
ns
High to Low Level Output
Output
2
Function Table
Inputs
Outputs
G1
G2
D
C
B
A
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
H
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
H
L
L
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
L
L
L
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
L
L
H
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
L
L
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
L
L
H
L
L
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
L
L
H
L
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
L
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
L
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
L
L
H
H
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
L
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
L
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
H
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
X
X
X
X
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
e
High Level L
e
Low Level X
e
Don't Care
Logic Diagram
TL F 6548 2
3
4
Physical Dimensions
inches (millimeters)
24-Lead Ceramic Dual-In-Line Package (J)
Order Number 54154DMQB or DM54154J
NS Package Number J24A
24-Lead Molded Dual-In-Line Package (N)
Order Number DM74154N
NS Package Number N24A
5