NSC 74154

54154/DM54154/DM74154
4-Line to 16-Line Decoders/Demultiplexers
General Description
Features
Each or these 4-line-to-16-line decoders utilizes TTL circuitry 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 implementing high-performance memory decoders. All inputs are buffered and input clamping diodes are provided to minimize
transmission-line effects and thereby simplify system design.
Y
Y
Y
Y
Y
Y
Y
Decodes 4 binary-coded inputs into one of 16 mutually
exclusive outputs
Performs the demultiplexing function by distributing data
from one input line to any one of 16 outputs
Input clamping diodes simplify system design
High fan-out, low-impedance, totem-pole outputs
Typical propagation delay
3 levels of logic 19 ns
Strobe 18 ns
Typical power dissipation 170 mW
Alternate Military/Aerospace device (54154) is available. 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
TL/F/6548
RRD-B30M105/Printed in U. S. A.
54154/DM54154/DM74154 4-Line to 16-Line Decoders/Demultiplexers
June 1989
Absolute Maximum Ratings
(Note)
Note: The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaranteed. 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.
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
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
DM54154
Parameter
DM74154
Units
Min
Nom
Max
Min
Nom
Max
4.5
5
5.5
4.75
5
5.25
V
0.8
0.8
V
VCC
Supply Voltage
VIH
High Level Input Voltage
VIL
Low Level Input Voltage
IOH
High Level Output Current
b 0.8
b 0.8
mA
IOL
Low Level Output Current
16
16
mA
TA
Free Air Operating Temperature
70
§C
Electrical Characteristics
Symbol
2
2
b 55
125
V
0
over recommended operating free air temperature range (unless otherwise noted)
Parameter
Conditions
Min
Typ
(Note 1)
Max
Units
b 1.5
V
VI
Input Clamp Voltage
VCC e Min, II e b12 mA
VOH
High Level Output
Voltage
VCC e Min, IOH e Max
VIL e Max, VIH e Min
VOL
Low Level Output
Voltage
VCC e Min, IOL e Max
VIH e Min, VIL e Max
II
Input Current
Input Voltage
VCC e Max, VI e 5.5V
IIH
High Level Input Current
IIL
Low Level Input Current
VCC e Max, VI e 2.4V
VCC e Max, VI e 0.4V
IOS
Short Circuit
Output Current
VCC e Max
(Note 2)
DM54
b 20
b 55
DM74
b 18
b 57
Supply Current
VCC e Max
(Note 3)
DM54
34
49
DM74
34
56
ICC
@
Max
2.4
3.2
V
0.25
0.4
V
1
mA
40
mA
b 1.6
mA
mA
mA
Note 1: All typicals are at VCC e 5V, TA e 25§ C.
Note 2: Not more than one output should be shorted at a time.
Note 3: ICC is measured with all outputs open and all inputs grounded.
Switching Characteristics
Symbol
at VCC e 5V and TA e 25§ C (See Section 1 for Test Waveforms and Output Load)
Parameter
From (Input)
To (Output)
RL e 400X, CL e 15 pF
Min
Units
Max
tPLH
Propagation Delay Time
Low to High Level Output
Data to
Output
36
ns
tPHL
Propagation Delay Time
High to Low Level Output
Data to
Output
33
ns
tPLH
Propagation Delay Time
Low to High Level Output
Strobe to
Output
30
ns
tPHL
Propagation Delay Time
High to Low Level Output
Strobe to
Output
27
ns
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
L
L
L
L
L
L
L
L
L
L
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
H
L
H
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
X
X
X
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
X
X
X
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
X
X
X
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
X
X
X
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
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
54154/DM54154/DM74154 4-Line to 16-Line Decoders/Demultiplexers
Physical Dimensions inches (millimeters) (Continued)
24-Lead Ceramic Flat Package (W)
Order Number 54154FMQB
NS Package Number W24C
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