NSC DM74LS450J 16:1 multiplexer Datasheet

July 1989
DM54LS450/DM74LS450 16:1 Multiplexer
General Description
Features/Benefits
The 16:1 Mux selects one of sixteen inputs, E0 through E15,
specified by four binary select inputs, A, B, C, and D. The
true data is output on Y and the inverted data on W. Propagation delays are the same for both inputs and addresses
and are specified for 50 pF loading. Outputs conform to the
standard 8 mA LS totem pole drive standard.
Y
Connection Diagram
Standard Test Load
Y
Y
24-pin SKINNYDIP saves space
Similar to 74150 (Fat DIP)
Low current PNP inputs reduce loading
Top View
TL/L/8338 – 2
TL/L/8338 – 1
Order Number DM54LS450J, DM74LS450J,
DM74LS450N or DM74LS450V
See NS Package Number J24F, N24C or V28A
Function Table
Input
Select
C1995 National Semiconductor Corporation
Output
D
C
B
A
W
Y
L
L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
L
L
L
L
H
H
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
L
H
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
E0
E1
E2
E3
E4
E5
E6
E7
E8
E9
E10
E11
E12
E13
E14
E15
TL/L/8338
RRD-B30M115/Printed in U. S. A.
DM54LS450/DM74LS450 16:1 Multiplexer
PRELIMINARY
Absolute Maximum Ratings
Off-State Output Voltage
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage VCC
5.5V
Storage Temperature
b 65§ to a 150§ C
7V
Input Voltage
5.5V
Operating Conditions
Symbol
Military
Parameter
VCC
Supply Voltage
TA
Operating Free-Air Temperature
Min
Nom
4.5
5
Commercial
b 55
Units
Max
Min
Nom
Max
5.5
4.75
5
5.25
V
125*
0
75
§C
*Case temperature
Electrical Characteristics Over Operating Conditions
Symbol
Parameter
Test Conditions
VIL
Low-Level Input Voltage
VIH
High-Level Input Voltage
VIC
Input Clamp Voltage
VCC e MIN
II eb18 mA
IIL
Low-Level Input Current
VCC e MAX
IIH
High-Level Input Current
II
Maximum Input Current
VOL
Low-Level Output Voltage
VCC e MIN
VIL e 0.8V
VIH e 2V
VOH
High-Level Output Voltage
VCC e MIN
VIL e 0.8V
VIH e 2V
IOS
ICC
Min
Typ ²
Max
0.8
2
Units
V
V
b 1.5
V
VI e 0.4V
b 0.25
mA
VCC e MAX
VI e 2.4V
25
mA
VCC e MAX
VI e 5.5V
1
mA
0.5
V
Output Short-Circuit Current*
VCC e 5.0V
Supply Current
VCC e MAX
IOL e 8 mA
MIL
IOH eb2 mA
COM
IOH eb3.2 mA
VO e 0V
2.4
V
b 30
60
b 130
mA
100
mA
*No more than one output should be shorted at a time and duration of the short-circuit should not exceed one second.
² All typical values are at VCC e 5V, TA e 25§ C.
Switching Characteristics Over Operating Conditions
Symbol
tPD
Parameter
Any Input to Y or W
Test Conditions
(See Test Load)
Military
Min
CL e 50 pF
R1 e 560X
R2 e 1.1kX
2
Commercial
Typ
Max
25
45
Min
Units
Typ
Max
25
40
ns
Logic Diagram
16:1 Mux
TL/L/8338 – 3
3
4
Physical Dimensions inches (millimeters)
24-Pin Narrow Ceramic Dual-In-Line Package (J)
Order Number DM54LS450J or DM74LS450J
NS Package Number J24F
24-Pin Narrow Plastic Dual-In-Line Package (N)
Order Number DM74LS450N
NS Package Number N24C
5
DM54LS450/DM74LS450 16:1 Multiplexer
Physical Dimensions inches (millimeters) (Continued)
28-Lead Plastic Chip Carrier (V)
Order Number DM74LS450V
NS Package Number V28A
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