DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer
August 1986
Revised May 2000
DM74S253
Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer
General Description
Each of these Schottky-clamped data selectors/multiplex-
ers contains inverters and drivers to supply fully comple-
mentary, on-chip, binary decoding data selection to the
AND-OR gates. Separate output control inputs are pro-
vided for each of the two four-line sections.
The 3-STATE outputs can interface directly with data lines
of bus-organized systems. With all but one of the common
outputs disabled (at a high impedance state), the low
impedance of the single enable output will drive the bus
line to a HIGH or LOW logic level.
Features
s
3-STATE version of S153 with same pin-out
s
Schottky-diode-clamped transistors
s
Permits multiplexing from N lines to 1 line
s
Performs parallel-T-serial conversion
s
Strobe/output control
s
High fan-out totem-pole outputs
s
Typical propagation delay
From data to output
From select to output
6 ns
12 ns
s
Typical power dissipation 275 mW
Ordering Code:
Order Number
DM74S253N
Package Number
N16E
Package Description
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Connection Diagram
Function Table
Select
Inputs
B
X
L
L
L
L
H
H
H
H
A
X
L
L
H
H
L
L
H
H
C0
X
L
H
X
X
X
X
X
X
C1
X
X
X
L
H
X
X
X
X
C2
X
X
X
X
X
L
H
X
X
C3
X
X
X
X
X
X
X
L
H
Data Inputs
Output
Control
G
H
L
L
L
L
L
L
L
L
Y
Z
L
H
L
H
L
H
L
H
Output
Address inputs A and B are common to both sections.
H
=
HIGH Level
L
=
LOW Level
X
=
Don’t Care
Z
=
High Impedance
© 2000 Fairchild Semiconductor Corporation
DS006481
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DM74S253
Logic Diagram
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2
DM74S253
Absolute Maximum Ratings
(Note 1)
Supply Voltage
Input Voltage
Operating Free Air Temperature Range
Storage Temperature Range
7V
5.5V
0°C to
+70°C
−65°C
to
+150°C
Note 1:
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 tables 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
V
CC
V
IH
V
IL
I
OH
I
OL
T
A
Supply Voltage
HIGH Level Input Voltage
LOW Level Input Voltage
HIGH Level Output Current
LOW Level Output Current
Free Air Operating Temperature
0
Parameter
Min
4.75
2
0.8
−6.5
20
70
Nom
5
Max
5.25
Units
V
V
V
mA
mA
°C
Electrical Characteristics
over recommended operating free air temperature (unless otherwise noted)
Symbol
V
I
V
OH
V
OL
I
I
I
IH
I
IL
I
OZH
I
OZL
I
OS
I
CC
Parameter
Input Clamp Voltage
HIGH Level
Output Voltage
LOW Level
Output Voltage
Input Current @ Max Input Voltage
HIGH Level Input Current
Low Level Input Current
Off-State Output Current with
HIGH Level Output Voltage Applied
Off-State Output Current with
LOW Level Output Voltage Applied
Short Circuit Output Current
Supply Current
Conditions
V
CC
=
Min, I
I
= −18
mA
V
CC
=
Min, I
OH
=
Max
V
IL
=
Max, V
IH
=
Min
V
CC
=
Min, I
OL
=
Max
V
IH
=
Min, V
IL
=
Max
V
CC
=
Max, V
I
=
5.5V
V
CC
=
Max, V
I
=
2.7V
V
CC
=
Max, V
I
=
0.5V
V
CC
=
Max, V
O
=
2.4V
V
IH
=
Min, V
IL
=
Max
V
CC
=
Max, V
O
=
0.5V
V
IH
=
Min, V
IL
=
Max
V
CC
=
Max (Note 3)
V
CC
=
Max (Note 4)
−40
55
2.4
3.2
0.5
1
50
−2
50
−50
−100
70
Min
Typ
(Note 2)
Max
−1.2
Units
V
V
V
mA
µA
mA
µA
µA
mA
mA
Note 2:
All typicals are at V
CC
=
5V, T
A
=
25°C.
Note 3:
Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 4:
I
CC
is measured with all outputs OPEN.
Switching Characteristics
at V
CC
=
5V and T
A
=
25°C
R
L
=
280Ω
Symbol
Parameter
From (Input)
To (Output)
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
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
Output Enable Time to HIGH Level Output
Output Enable Time to LOW Level Output
Output Disable Time to HIGH Level Output (Note 5)
Output Disable Time to LOW Level Output (Note 5)
Data to Y
Data to Y
Select to Y
Select to Y
Output Control to Y
Output Control to Y
Output Control to Y
Output Control to Y
C
L
=
15 pF
Min
Max
9
9
18
18
16.5
18
9.5
15
C
L
=
50 pF
Min
Max
12
12
21
21
19.5
21
ns
ns
ns
ns
ns
ns
ns
ns
Units
Note 5:
C
L
=
5 pF.
3
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DM74S253 Dual 3-STATE 1-of-4 Line Data Selector/Multiplexer
Physical Dimensions
inches (millimeters) unless otherwise noted
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Package Number N16E
Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and
Fairchild reserves the right at any time without notice to change said circuitry and specifications.
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SEMICONDUCTOR CORPORATION. As used herein:
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which, (a) are intended for surgical implant into the
body, or (b) support or sustain life, and (c) whose failure
to perform when properly used in accordance with
instructions for use provided in the labeling, can be rea-
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user.
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device or system whose failure to perform can be rea-
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device or system, or to affect its safety or effectiveness.
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