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7281L15PAIG PDF预览

7281L15PAIG

更新时间： 2024-11-10 00:57:35
品牌 Logo 应用领域
艾迪悌 - IDT 先进先出芯片
页数 文件大小 规格书
12页 295K
描述
CMOS DUAL ASYNCHRONOUS FIFO

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7281L15PAIG 数据手册

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IDT7280  
IDT7281  
IDT7282  
IDT7283  
IDT7284  
IDT7285  
CMOS DUAL ASYNCHRONOUS FIFO  
DUAL 256 x 9, DUAL 512 x 9,  
DUAL 1,024 x 9, DUAL 2,048 x 9,  
DUAL 4,096 x 9, DUAL 8,192 x 9  
DESCRIPTION:  
FEATURES:  
The IDT7280/7281/7282/7283/7284/7285 are dual-FIFO memories that  
loadandemptydataonafirst-in/first-outbasis.Thesedevicesarefunctional  
andcompatibletotwoIDT7200/7201/7202/7203/7204/7205FIFOsinasingle  
packagewithallassociatedcontrol,data,andflaglinesassignedtoseparate  
pins. The devices use Full and Empty flags to prevent data overflow and  
underflowandexpansionlogictoallowforunlimitedexpansioncapabilityinboth  
word size and depth.  
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•
•
•
•
The IDT7280 is equivalent to two IDT7200 256 x 9 FIFOs  
The IDT7281 is equivalent to two IDT7201 512 x 9 FIFOs  
The IDT7282 is equivalent to two IDT7202 1,024 x 9 FIFOs  
The IDT7283 is equivalent to two IDT7203 2,048 x 9 FIFOs  
The IDT7284 is equivalent to two IDT7204 4,096 x 9 FIFOs  
The IDT7285 is equivalent to two IDT7205 8,192 x 9 FIFOs  
Low power consumption  
Thereadsandwritesareinternallysequentialthroughtheuseofringpointers,  
withnoaddressinformationrequiredtoloadandunloaddata.Dataistoggled  
inandoutofthedevicesthroughtheuseoftheWrite(W)andRead(R)pins.  
Thedevicesutilizea9-bitwidedataarraytoallowforcontrolandparitybits  
attheuser’soption.Thisfeatureis especiallyusefulindatacommunications  
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.  
— Active: 685 mW (max.)  
— Power-down: 83 mW (max.)  
Ultra high speed—12 ns access time  
Asynchronous and simultaneous read and write  
Offers optimal combination of data capacity, small foot print  
and functional flexibility  
Ideal for bi-directional, width expansion, depth expansion,  
bus-matching, and data sorting applications  
Status Flags: Empty, Half-Full, Full  
Auto-retransmit capability  
High-performance CMOS technology  
Space-saving TSSOP  
Industrial temperature range (–40°C to +85°C) is available  
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•
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TheseFIFOsarefabricatedusinghigh-speedCMOStechnology.Theyare  
designed for those applications requiring asynchronous and simultaneous  
read/writesinmultiprocessingandratebufferapplications.  
FUNCTIONAL BLOCK DIAGRAM  
DATA INPUTS  
DATA INPUTS  
(DA0-DA8)  
(DB0-DB8)  
RSA  
RSB  
WB  
WRITE  
CONTROL  
WRITE  
CONTROL  
RAM  
RAM  
WA  
ARRAY A  
256 x 9  
ARRAY B  
256 x 9  
512 x 9  
512 x 9  
1,024 x 9  
2,048 x 9  
4,096 x 9  
8,192 x 9  
1,024 x 9  
2,048 x 9  
4,096 x 9  
8,192 x 9  
WRITE  
POINTER  
WRITE  
POINTER  
READ  
POINTER  
READ  
POINTER  
THREE-  
STATE  
BUFFERS  
THREE-  
STATE  
BUFFERS  
READ  
CONTROL  
READ  
CONTROL  
RA  
RESET  
LOGIC  
RESET  
LOGIC  
FLAG  
LOGIC  
FLAG  
LOGIC  
EXPANSION  
LOGIC  
EXPANSION  
LOGIC  
XIA  
FFA EFA  
RB  
XIB  
XOA/HFA  
FLA/RTA  
FFB EFB  
FLB/RTB  
DATA  
OUTPUTS  
(QA0-QA8)  
XOB/HFB  
DATA  
OUTPUTS  
(QB0-QB8)  
3208 drw 01  
IDTandtheIDTlogoareregisteredtrademarksofIntegratedDeviceTechnology,Inc  
COMMERCIALANDINDUSTRIALTEMPERATURERANGES  
JUNE 2012  
1
©2012 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice.  
DSC-3208/9  
1234567...12

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