Integrated Device Technology, Inc.

COMMERCIAL TEMPERATURE RANGE

DECEMBER 1996

©1996 Integrated Device Technology, Inc.

DSC-3033/6

5.08

1

7202/7203/7204. These devices load and empty data on a

first-in/first-out basis.

They use Full and Empty flags to

prevent data overflow and underflow and expansion logic to

allow for unlimited expansion capability in both word size and

depth.

The reads and writes are internally sequential through the

use of ring pointers, with no address information required to

load and unload data. Data is toggled in and out of the devices

through the use of the Write (

W)andRead(R)pins. Thedevices

have a maximum data access time as fast as 25 ns.

The devices utilize a 9-bit wide data array to allow for

control and parity bits at the user’s option. This feature is

especially useful in data communications applications where

it is necessary to use a parity bit for transmission/reception

error checking. They also feature a Retransmit (

RT) capability

that allows for reset of the read pointer to its initial position

when

RT is pulsed low to allow for retransmission from the

beginning of data. A Half-Full Flag is available in the single

device mode and width expansion modes.

The IDT72V01/72V02/72V03/72V04 is fabricated using

IDT’s high-speed CMOS technology. It has been designed for

those applications requiring asynchronous and simultaneous

read/writes in multiprocessing and rate buffer applications.

FEATURES:

• 3.3V family uses 70% less power than the 5 Volt 7201/

02/03/04 family

• 512 x 9 organization (72V01)

• 1024 x 9 organization (72V02)

• 2048 x 9 organization (72V03)

• 4096 X 9 organization (72V04)

• Functionally compatible with 720x family

• 25 ns access time

• Asynchronous and simultaneous read and write

• Fully expandable by both word depth and/or bit width

• Status Flags: Empty, Half-Full, Full

• Auto-retransmit capability

• Available in 32-pin PLCC and 28-pin SOIC Package (to

be determined)

able, tested to military electrical specifications

3.3 VOLT CMOS

ASYNCHRONOUS FIFO

512 x 9, 1024 x 9, 2048 x 9, 4096 x 9

CEMOS is a trademark of Integrated Device Technology, Inc.

FAST is a trademark of National Semiconductor Co.

IDT72V01

IDT72V02

IDT72V03

IDT72V04

DESCRIPTION:

The IDT72V01/72V02/72V03/72V04 are dual-port FIFO

memories that operate at a power supply voltage (Vcc)

between 3.0V and 3.6V. Their architecture, functional opera-

tion and pin assignments are identical to those of the IDT7201/

FUNCTIONAL BLOCK DIAGRAM

W

WRITE

CONTROL

READ

CONTROL

R

FLAG

LOGIC

EXPANSION

LOGIC

XI

WRITE

POINTER

RAM

ARRAY

512x 9

1024 x 9

2048 x 9

4096 x 9

READ

POINTER

DATA INPUTS

RESET

LOGIC

THREE-

STATE

BUFFERS

DATA OUTPUTS

EF

FF

XO/HF

RS

FL/RT

0

0

2679 drw 01

For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.