ABSOLUTE MAXIMUM RATINGS

(1)

RECOMMENDED OPERATING CONDITIONS

SN54LS243, SN74LS243

MIN

MAX

UNIT

7

V

Input voltage

7

V

OFF-state output voltage

5.5

V

SN54LS243

–55

125

Operating free-air temperature range

°C

SN74LS243

0

70

Storage temperature range

–65

150

°C

(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)

Voltage values are with respect to network ground terminal.

over operating free-air temperature range (unless otherwise noted)

SN54LS243

SN74LS243

UNIT

MIN

NOM

MAX

MIN

NOM

MAX

4.5

5

5.5

4.75

5

5.25

V

High-level input voltage

2

2

V

Low-level input voltage

0.7

0.8

V

High-level output voltage

–12

–15

mA

Low-level output voltage

12

24

mA

Operating free-air temperature

–55

125

0

70

°C

(1)

Voltage values are with respect to network ground terminal.

Copyright © 1985–2008, Texas Instruments Incorporated

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3

Product Folder Link(s): SN54LS243 SN74LS243