24-Pin Narrow Ceramic Dual-In-Line Package (J)

Order Number DM54LS491J or DM74LS491J

NS Package Number J24F

24-Pin Narrow Plastic Dual-In-Line Package (N)

Order Number DM74LS491N

NS Package Number N24C

LIFE SUPPORT POLICY

NATIONAL’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 NATIONAL

SEMICONDUCTOR CORPORATION As used herein

1 Life support devices or systems are devices or

2 A critical component is any component of a life

systems which (a) are intended for surgical implant

support device or system whose failure to perform can

into the body or (b) support or sustain life and whose

be reasonably expected to cause the failure of the life

failure to perform when properly used in accordance

support device or system or to affect its safety or

with instructions for use provided in the labeling can

effectiveness

be reasonably expected to result in a significant injury

to the user

National Semiconductor

National Semiconductor

National Semiconductor

National Semiconductor

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National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications