SEPTEMBER 2004

DSC-2948/08

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©2004 Integrated Device Technology, Inc.

Features

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32K x 8 advanced high-speed CMOS static RAM

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Commercial (0° to 70°C) and Industrial (-40° to 85°C)

temperature options

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Equal access and cycle times

– Commercial and Industrial: 12/15/20/25ns

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One Chip Select plus one Output Enable pin

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Bidirectional data inputs and outputs directly

TTL-compatible

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Low power consumption via chip deselect

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Commercial product available in 28-pin 300- and 600-mil

Plastic DIP, 300 mil Plastic SOJ and TSOP packages

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Industrial product available in 28-pin 300 mil Plastic SOJ

and TSOP packages

Description

The IDT71256SA is a 262,144-bit high-speed Static RAM organized

as 32K x 8. It is fabricated using IDT’s high-perfomance, high-reliability

CMOS technology. This state-of-the-art technology, combined with

innovativecircuitdesigntechniques,providesacost-effectivesolutionfor

high-speed memory needs.

The IDT71256SA has an output enable pin which operates as fast as

6ns,withaddress accesstimesasfastas12ns. Allbidirectionalinputsand

outputs of the IDT71256SA are TTL-compatible and operation is from a

single 5V supply. Fully static asynchronous circuitry is used, requiring no

clocks or refresh for operation.

The IDT71256SA is packaged in 28-pin 300- and 600-mil Plastic DIP,

28-pin 300 mil Plastic SOJ and TSOP.

Functional Block Diagram

CMOS Static RAM

256K (32K x 8-Bit)

IDT71256SA

CS

WE

OE

8

8

CONTROL

LOGIC

I/O CONTROL

262,144-BIT

MEMORY

ARRAY

ADDRESS

DECODER

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