IDT72211 IDT [Integrated Device Technology], IDT72211 Datasheet - Page 19
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IDT72211
Manufacturer Part Number
IDT72211
Description
CMOS SyncFIFO 64 X 9, 256 x 9, 512 x 9, 1024 X 9, 2048 X 9 and 4096 x 9
Manufacturer
IDT [Integrated Device Technology]
Datasheet
1.IDT72211.pdf
(19 pages)
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IDT72421/72201/72211/72221/72231/72241 CMOS SyncFIFO
64 x 9, 256 x 9, 512 x 9, 1024 x 9, 2048 x 9 and 4096 x 9
DEPTH EXPANSION - The IDT72421/7221/72211/72221/
72231/72241 can be adapted to applications when the re-
quirements are for greater than 64/256/512/1024/2048/4096
words. The existence of two enable pins on the read and write
port allow depth expansion. The Write Enable 2/Load pin is
used as a second write enable in a depth expansion configu-
ration thus the Programmable flags are set to the default
values. Depth expansion is possible by using one enable
input for system control while the other enable input is con-
trolled by expansion logic to direct the flow of data. A typical
application would have the expansion logic alternate data
ORDERING INFORMATION
IDT
Device Type
XXXXX
Power
X
Speed
XX
Package
X
Temperature
Process/
Range
X
5.07
access from one device to the next in a sequential manner.
The IDT72421/7221/72211/72221/72231/72241 operates in
the Depth Expansion configuration when the following condi-
tions are met:
1. The WEN2/
2. External logic is used to control the flow of data.
IDT'S SYNCHRONOUS FIFOs USING THE RING COUNTER
APPROACH" for details of this configuration.
BLANK
B
J
L
PF
12
15
20
25
35
50
L
72421
72201
72211
72221
Please see the Applicatioin Note" DEPTH EXPANSION OF
operates a second Write Enable.
Commercial (0 C to +70 C)
Military (–55 C to +125 C)
Plastic Leaded Chip Carrier (PLCC)
Leadless Chip Carrier (LCC)
Thin Quad Flat Pack (TQFP)
Com'l. (72421/72201/72211) Only
Com'l. Only
All except 72221/72231/72241 Military
Low Power
64 x 9 Synchronous FIFO
256 x 9 Synchronous FIFO
512 x 9 Synchronous FIFO
1024 x 9 Synchronous FIFO
2048 x 9 Synchronous FIFO
4096 x 9 Synchronous FIFO
Compliant to MIL-STD-883, Class B
LD
MILITARY AND COMMERCIAL TEMPERATURE RANGES
pin is held HIGH during Reset so that this pin
2655 drw 18
Clock Cycle
Time (t
Speed in ns
CLK
19
)