CMOS ASYNCHRONOUS FIFO
256 x 9, 512 x 9 and 1,024 x 9
IDT7200L
IDT7201LA
IDT7202LA
LEAD FINISH (SnPb) ARE IN EOL PROCESS - LAST TIME BUY EXPIRES JUNE 15, 2018
•
Industrial temperature range (–40oC to +85oC) is available
(plastic packages only)
Green parts available, see ordering information
FEATURES:
• First-In/First-Out dual-port memory
• 256 x 9 organization (IDT7200)
•
• 512 x 9 organization (IDT7201)
• 1,024 x 9 organization (IDT7202)
• Low power consumption
— Active: 440mW (max.)
DESCRIPTION:
TheIDT7200/7201/7202aredual-portmemoriesthatloadandemptydata
onafirst-in/first-outbasis. ThedevicesuseFullandEmptyflagstopreventdata
overflowandunderflowandexpansionlogictoallowforunlimitedexpansion
capability in both word size and depth.
—Power-down: 28mW (max.)
• Ultra high speed—12ns access time
• Asynchronous and simultaneous read and write
• Fully expandable by both word depth and/or bit width
• 720x family is pin and functionally compatible from 256 x 9 to 64k x 9
• Status Flags: Empty, Half-Full, Full
• Auto-retransmit capability
• High-performance CEMOS™ technology
• Military product compliant to MIL-STD-883, Class B
• Standard Military Drawing #5962-87531, 5962-89666, 5962-89863
and 5962-89536 are listed on this function
• Dual versions available in the TSSOP package. For more informa-
tion, see IDT7280/7281/7282 data sheet
IDT7280 = 2 x IDT7200
The reads and writes are internally sequential through the use of ring
pointers,withnoaddressinformationrequiredtoloadandunloaddata. Data
istoggledinandoutofthedevicesthroughtheuseoftheWrite(W)andRead
(R) pins.
Thedevicesutilizea9-bitwidedataarraytoallowforcontrolandparitybits
attheuser’soption. Thisfeatureisespeciallyusefulindatacommunications
applicationswhereitisnecessarytouseaparitybitfortransmission/reception
errorchecking. ItalsofeaturesaRetransmit(RT)capabilitythatallowsforreset
of the read pointer to its initial position when RT is pulsed LOW to allow for
retransmissionfromthebeginningofdata. AHalf-FullFlagisavailableinthe
singledevicemodeandwidthexpansionmodes.
TheseFIFOsarefabricatedusinghigh-speedCMOStechnology. They
aredesignedforthoseapplicationsrequiringasynchronousandsimultaneous
read/writes in multiprocessing and rate buffer applications. Military grade
productismanufacturedincompliancewithMIL-STD-883,ClassB.
IDT7281 = 2 x IDT7201
IDT7282 = 2 x IDT7202
FUNCTIONAL BLOCK DIAGRAM
DATA INPUTS
(D0-D8)
WRITE
CONTROL
W
RAM
ARRAY
256 x 9
WRITE
POINTER
READ
POINTER
512 x 9
1,024 x 9
THREE-
STATE
BUFFERS
RS
DATA OUTPUTS
READ
(Q0-Q8)
RESET
LOGIC
R
CONTROL
FLAG
LOGIC
EF
FF
FL/RT
EXPANSION
2679 drw 01
XO/HF
XI
LOGIC
IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc.
NOVEMBER 2017
COMMERCIAL, INDUSTRIAL AND MILITARY TEMPERATURE RANGES
1
©2017 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.
DSC-2679/15
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