鈥?/div>
First-In/First-Out Dual-Port memory
2048 x 9 organization (IDT7203)
4096 x 9 organization (IDT7204)
8192 x 9 organization (IDT7205)
16384 x 9 organization (IDT7206)
High-speed: 12ns access time
Low power consumption
鈥?Active: 770mW (max.)
鈥?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
Standard Military Drawing for #5962-88669 (IDT7203),
5962-89567 (IDT7203), and 5962-89568 (IDT7204) are
listed on this function
Industrial temperature range (-40
o
C to +85
o
C) is avail-
able, tested to military electrical specifications
DESCRIPTION:
The IDT7203/7204/7205/7206 are dual-port memory buff-
ers 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
the Write ( ) and Read ( ) pins.
The devices 9-bit width provides a bit for a control or parity
at the user鈥檚 option. It also features a Retransmit ( ) capa-
bility that allows the read pointer to be reset to its initial position
when
is pulsed LOW. A Half-Full Flag is available in the
single device and width expansion modes.
The IDT7203/7204/7205/7206 are fabricated using IDT鈥檚
high-speed CMOS technology. They are designed for appli-
cations requiring asynchronous 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.
W
R
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
RT
RT
鈥?/div>
.
FUNCTIONAL BLOCK DIAGRAM
DATA INPUTS
(D
0
鈥揇
8
)
W
WRITE
CONTROL
WRITE
POINTER
RAM ARRAY
2048 x 9
4096 x 9
8192 x 9
16384 x 9
READ
POINTER
THREE-
STATE
BUFFERS
R
RS
READ
CONTROL
FLAG
LOGIC
DATA OUTPUTS
(Q
0
鈥換
8
)
RESET
LOGIC
FL RT
EF
FF
/
XI
EXPANSION
LOGIC
XO HF
/
2661 drw 01
The IDT logo is a registered trademark of Integrated Device Techology, Inc.
MILITARY AND COMMERCIAL TEMPERATURE RANGES
漏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.
DECEMBER 1996
DSC-2661/9
5.04
1
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