CMOS ASYNCHRONOUS FIFO
65,536 x 9
Integrated Device Technology, Inc.
ADVANCED
INFORMATION
IDT7208
FEATURES:
鈥?65536 x 9 storage capacity
鈥?High-speed: 15ns access time
鈥?Low power consumption
鈥?Active: 660mW (max.)
鈥?Power-down: 44mW (max.)
鈥?Asynchronous and simultaneous read and write
鈥?Fully expandable in both word depth and width
鈥?Pin and functionally compatible with IDT720x family
鈥?Status Flags: Empty, Half-Full, Full
鈥?Retransmit capability
鈥?High-performance CMOS technology
鈥?Industrial temperature range (-40
o
C to +85
o
C) is avail-
able, tested to military electrical specifications
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 (
W
) and Read (
R
) pins.
The device's 9-bit width provides a bit for a control or parity
at the user鈥檚 option. It also features a Retransmit (
RT
) capa-
bility that allows the read pointer to be reset to its initial position
when
RT
is pulsed LOW. A Half-Full Flag is available in the
single device and width expansion modes.
The IDT7208 is fabricated using IDT鈥檚 high-speed CMOS
technology. It is designed for applications requiring asynchro-
nous and simultaneous read/writes in multiprocessing, rate
buffering, and other applications.
DESCRIPTION:
The IDT7208 is a monolithic dual-port memory buffer with
FUNCTIONAL BLOCK DIAGRAM
DATA INPUTS
(D
0
鈥揇
8
)
W
WRITE
CONTROL
鈥?/div>
WRITE
POINTER
RAM ARRAY
65,536 x 9
READ
POINTER
THREE-
STATE
BUFFERS
DATA OUTPUTS
(Q
0
鈥換
8
)
鈥?/div>
RS
R
READ
CONTROL
鈥?/div>
鈥?/div>
鈥?/div>
FLAG
LOGIC
鈥?/div>
鈥?/div>
EF
FF
鈥?/div>
RESET
LOGIC
FL
/
RT
XI
EXPANSION
LOGIC
XO
/
HF
3274 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
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-3274/1
5.06
1
IDT7208L20J 產(chǎn)品屬性
32
集成電路 (IC)
邏輯 - FIFO
7200
異步
576K（64K x 9）
33.3MHz
20ns
4.5 V ~ 5.5 V
0°C ~ 70°C
表面貼裝
32-LCC（J 形引線）
32-PLCC（13.97x11.43）
管件
7208L20JIDT7208L20J-ND
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