Datasheet
SN54LVC157A, SN74LVC157A
SCAS292Q –JANUARY 1993–REVISED DECEMBER 2010
www.ti.com
Absolute Maximum Ratings
(1)
over operating free-air temperature range (unless otherwise noted)
MIN MAX UNIT
V
CC
Supply voltage range –0.5 6.5 V
V
I
Input voltage range
(2)
–0.5 6.5 V
V
O
Output voltage range
(2) (3)
–0.5 V
CC
+ 0.5 V
I
IK
Input clamp current V
I
< 0 –50 mA
I
OK
Output clamp current V
O
< 0 –50 mA
I
O
Continuous output current ±50 mA
Continuous current through V
CC
or GND ±100 mA
D package
(4)
73
DB package
(4)
82
q
JA
Package thermal impedance NS package
(4)
64 °C/W
PW package
(4)
108
RGY package
(5)
39
T
stg
Storage temperature range –65 150 °C
P
tot
Power dissipation
(6) (7)
T
A
= –40°C to 125°C 500 mW
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The value of V
CC
is provided in the recommended operating conditions table.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.
(5) The package thermal impedance is calculated in accordance with JESD 51-5.
(6) For the D package, above 70°C the value of P
tot
derates linearly with 8 mW/K.
(7) For the DB, NS, and PW packages, above 60°C the value of P
tot
derates linearly with 5.5 mW/K.
Recommended Operating Conditions
(1)
SN54LVC157A
–55 TO 125°C UNIT
MIN MAX
Operating 2 3.6
V
CC
Supply voltage V
Data retention only 1.5
V
IH
High-level input voltage V
CC
= 2.7 V to 3.6 V 2 V
V
IL
Low-level input voltage V
CC
= 2.7 V to 3.6 V 0.8 V
V
I
Input voltage 0 5.5 V
V
O
Output voltage 0 V
CC
V
V
CC
= 2.7 V –12
I
OH
High-level output current mA
V
CC
= 3 V –24
V
CC
= 2.7 V 12
I
OL
Low-level output current mA
V
CC
= 3 V 24
(1) All unused inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
4 Submit Documentation Feedback Copyright © 1993–2010, Texas Instruments Incorporated
Product Folder Link(s): SN54LVC157A SN74LVC157A