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IDT71342SA

HIGH-SPEED 4K x 8 DUAL-PORT STATIC RAM WITH SEMAPHORE

Integrated Device Technology 

HIGH SPEED

4K X 8 DUAL-PORT

STATIC RAM

WITH SEMAPHORE

IDT71342SA/LA

Features

◆ High-speed access

– Commercial: 20/25/35/45/55/70ns (max.)

– Industrial: 25/35/55ns (max.)

◆ Low-power operation

– IDT71342SA

Active: 700mW (typ.)

Standby: 5mW (typ.)

– IDT71342LA

Active: 700mW (typ.)

Standby: 1mW (typ.)

◆ Fully asynchronous operation from either port

◆ Full on-chip hardware support of semaphore signalling be-

tween ports

◆ Battery backup operation—2V data retention (LA only)

◆ TTL-compatible; single 5V (±10%) power supply

◆ Available in plastic packages

◆ Industrial temperature range (–40°C to +85°C) is available

for selected speeds

Functional Block Diagram

R/WL

CEL

OEL

I/O0L- I/O7L

I/O

CONTROL

I/O

CONTROL

R/WR

CER

OER

I/O0R - I/O7R

SEML

A0L- A11L

MEMORY

ARRAY

SEMAPHORE

LOGIC

ADDRESS

DECODER

ADDRESS

DECODER

SEMR

A0R- A11R

2721 drw 01

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©2000 Integrated Device Technology, Inc.

JANUARY 2001

DSC 2621/12

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