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74F403

First-In First-Out (FIFO) Buffer Memory

Fairchild Semiconductor 

January 1989

Revised May 1999

74F403A

First-In First-Out (FIFO) Buffer Memory

General Description

The 74F403A is an expandable fall-through type high-

speed First-In First-Out (FIFO) Buffer Memory optimized

for high-speed disk or tape controllers and communication

buffer applications. It is organized as 16-words by 4-bits

and may be expanded to any number of words or any num-

ber of bits in multiples of four. Data may be entered or

extracted asynchronously in serial or parallel, allowing eco-

nomical implementation of buffer memories.

The 74F403A has 3-STATE outputs which provide added

versatility and is fully compatible with all TTL families.

Features

s Serial or parallel input

s Serial or parallel output

s Expandable without external logic

s 3-STATE outputs

s Fully compatible with all TTL families

s Slim 24-pin package

s 9403A replacement

s Guaranteed 4000V minimum ESD protection

Ordering Code:

Order Number Package Number

Package Description

74F403ASPC

N24C

24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Logic Symbol

© 1999 Fairchild Semiconductor Corporation DS009536.prf

www.fairchildsemi.com

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