IDT7207 Datasheet, PDF (1/12 Pages) Integrated Device Technology – CMOS ASYNCHRONOUS FIFO 32,768 x 9

CMOS ASYNCHRONOUS FIFO
32,768 x 9
IDT7207
Integrated Device Technology, Inc.
FEATURES:
• 32768 x 9 storage capacity
• High-speed: 15ns access time
• Low power consumption
— Active: 660mW (max.)
— Power-down: 44mW (max.)
• Asynchronous and simultaneous read and write
• Fully expandable in both word depth and width
• Pin and functionally compatible with IDT720x family
• Status Flags: Empty, Half-Full, Full
• Retransmit capability
• High-performance CMOS technology
• Military product compliant to MIL-STD-883, Class B
• Industrial temperature range (-40^oC to +85^oC) is avail-
able, tested to military electrical specifications
FUNCTIONAL BLOCK DIAGRAM
WRITE
W
CONTROL
DESCRIPTION:
The IDT7207 is a monolithic dual-port memory buffer with
internal pointers that load and empty data on a first-in/first-out
basis. The device uses 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.
Data is toggled in and out of the device through the use of
W R the Write ( ) and Read ( ) pins.
The devices 9-bit width provides a bit for a control or parity
RT at the user’s option. It also features a Retransmit ( ) capa-
bility that allows the read pointer to be reset to its initial position
RT when is pulsed LOW. A Half-Full Flag is available in the
single device and width expansion modes.
The IDT7207 is fabricated using IDT’s high-speed CMOS
technology. It is designed for applications requiring asynchro-
nous and simultaneous read/writes in multiprocessing, rate
buffering, and other applications.
Military grade product is manufactured in compliance with
the latest revision of MIL-STD-883, Class B.
DATA INPUTS
(D 0 –D 8 )
WRITE
POINTER
RAM ARRAY
32,768 x 9
READ
POINTER
READ
R
CONTROL
THREE-
STATE
BUFFERS
DATA OUTPUTS
(Q 0 –Q 8 )
FLAG
LOGIC
EF
FF
RS
RESET
LOGIC
/ FL RT
EXPANSION
LOGIC
XI
/ XO HF
The IDT logo is a registered trademark of Integrated Device Techology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
©1996 Integrated Device Technology, Inc.
For latest information contact IDT's web site at www.idt.com or fax-on-demand at 408-492-8391.
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DECEMBER 1996
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