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9403A Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 9403A
Description  First-In First-Out (FIFO) Buffer Memory
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com

9403A Datasheet(HTML) 1 Page - Fairchild Semiconductor

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April 1989
Revised June 1999
© 1999 Fairchild Semiconductor Corporation
First-In First-Out (FIFO) Buffer Memory
General Description
The 9403A 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 number of bits
in multiples of four. Data may be entered or extracted asyn-
chronously in serial or parallel, allowing economical imple-
mentation of buffer memories.
The 9403A has 3-STATE outputs which provide added ver-
satility and is fully compatible with all TTL families.
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
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagram
Order Number
Package Number Package Description
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-011, 0.400 Wide

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