Fairchild DM74LS253M 3-state data selector/multiplexer Datasheet

DM74LS253 3-STATE Data Selector/Multiplexer
August 1986
Revised March 2000
DM74LS253
3-STATE Data Selector/Multiplexer
General Description
Features
Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the
AND-OR gates. Separate output control inputs are provided for each of the two four-line sections.
■ 3-STATE version of DM74LS153 with same pinout
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 enabled output will drive the bus
line to a HIGH or LOW logic level.
■ Strobe/output control
■ Schottky-diode-clamped transistors
■ Permit multiplexing from N-lines to one line
■ Performs parallel-to-serial conversion
■ High fanout totem-pole outputs
■ Typical propagation delay
Data to output
12 ns
Select to output
21 ns
■ Typical power dissipation 35 mW
Ordering Code:
Order Number
Package Number
Package Description
DM74LS253M
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
DM74LS253N
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Function Table
Select
Data Inputs
Output
Inputs
Output
Control
B
A
C0
C1
C2
C3
G
Y
X
X
X
X
X
X
H
Z
L
L
L
X
X
X
L
L
L
L
H
X
X
X
L
H
L
H
X
L
X
X
L
L
L
H
X
H
X
X
L
H
H
L
X
X
L
X
L
L
H
L
X
X
H
X
L
H
H
H
X
X
X
L
L
L
H
H
X
X
X
H
L
H
Address Inputs A and B are common to both sections.
H = HIGH Level
L = LOW Level
X = Don't Care
Z = High Impedance (OFF)
© 2000 Fairchild Semiconductor Corporation
DS006416
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DM74LS253
Logic Diagram
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2
Supply Voltage
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” table are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
7V
Input Voltage
7V
0°C to +70°C
Operating Free Air Temperature Range
−65°C to +150°C
Storage Temperature Range
Recommended Operating Conditions
Symbol
Parameter
Min
Nom
Max
4.75
5
5.25
Units
VCC
Supply Voltage
VIH
HIGH Level Input Voltage
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−2.6
mA
IOL
LOW Level Output Current
24
mA
TA
Free Air Operating Temperature
70
°C
2
V
0
Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level
VCC = Min, IOH = Max
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
Output Voltage
VIL = Max, VIH = Min
Min
Typ
(Note 2)
Max
−1.5
2.4
3.1
Units
V
V
0.5
IOL = 12 mA, VCC = Min
0.4
V
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
0.1
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
−0.4
mA
IOZH
Off-State Output Current with
VCC = Max, VO = 2.7V
HIGH Level Output Voltage Applied
VIH = Min, VIL = Max
20
µA
−20
µA
IOZL
Off-State Output Current with
VCC = Max, VO = 0.4
LOW Level Output Voltage Applied
VIH = Min, VIL = Max
−20
mA
IOS
Short Circuit Output Current
VCC = Max (Note 3)
−100
mA
ICC1
Supply Current
VCC = Max (Note 4)
7
12
mA
ICC2
Supply Current
VCC = Max (Note 5)
8.5
14
mA
Note 2: All typicals are at VCC = 5V, TA = 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: ICC1 is measured with all outputs OPEN, and all the inputs grounded.
Note 5: ICC2 is measured with the outputs OPEN, OUTPUT CONTROL at 4.5V and all other inputs grounded.
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DM74LS253
Absolute Maximum Ratings(Note 1)
DM74LS253
Switching Characteristics
at VCC = 5V and TA = 25°C
RL = 667Ω
From (Input)
Symbol
Parameter
To (Output)
CL = 45 pF
Min
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPZH
Output Enable Time to
HIGH Level Output
tPZL
Output Enable Time to
LOW Level Output
tPHZ
Output Disable Time from
HIGH Level Output (Note 6)
tPLZ
Output Disable Time from
LOW Level Output (Note 6)
CL = 150 pF
Min
Units
Max
Data to Y
25
35
ns
Data to Y
20
30
ns
Select to Y
45
54
ns
Select to Y
32
44
ns
18
32
ns
23
35
ns
Output
Control to Y
Output
Control to Y
Output
Control to Y
Output
Control to Y
Note 6: CL = 5 pF.
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Max
4
41
ns
27
ns
DM74LS253
Physical Dimensions inches (millimeters) unless otherwise noted
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
Package Number M16A
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DM74LS253 3-STATE Data Selector/Multiplexer
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
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.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD
SEMICONDUCTOR CORPORATION. As used herein:
2. A critical component in any component of a life support
device or system whose failure to perform can be reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
1. Life support devices or systems are devices or systems
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 reasonably expected to result in a significant injury to the
user.
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