Datasheet > PI74ALVCHR16269V

PI74ALVCHR16269V

更新时间： 2024-10-26 23:27:39

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
5页	316K
描述
Bus Exchanger

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中文翻译

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数据手册

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PI74ALVCHR16269V 数据手册

PI74ALVCHR16269

12-Bit to 24-Bit Registered Bus Exchanger

with 3-State Outputs

ProductDescription

Product Features

Pericom Semiconductors PI74ALVCH series of logic circuits are

produced using the Companys advanced 0.5 micron CMOS

technology, achieving industry leading speed.

· PI74ALVCHR16269 is designed for low voltage operation

· V = 2.3V to 3.6V

· Hysteresis on all inputs

The PI7ALVCHR16269isusedinapplicationsinwhichtwoseparate

portsmustbemultiplexedonto,ordemultiplexedfrom,asingleport.It

isparticularlysuitableasaninterfacebetweensynchronousDRAMs

and high-speed microprocessors.

· Typical V

(Output Ground Bounce)

OLP

< 0.8V atV = 3.3V, T = 25°C

· Typical V

(Output V Undershoot)

OHV

< 2.0V atV = 3.3V, T = 25°C

Data is stored on the internal B-port registers on the low-to-high

transitionoftheclock(CLK)inputwhentheappropriateclock-enable

(CLKENA) inputs are low. Proper control of these inputs allows two

sequential12-bitwordstobepresentedasa24-bitwordontheB-port.

For data transfer in the B-to-A direction, a single storage register is

provided.Theselect(SEL)lineselects1Bor2BdatafortheAoutputs.

The register on the A output permits the fastest possible data transfer,

thusextendingtheperiodduringwhichthedataisvalidonthebus.The

controlterminalsareregisteredsothatalltransactionsaresynchronous

with CLK. Data flow is controlled by the active-low output enables

(OEA,OEB1,andOEB2).

· All output ports have equivalent 26W series resistors,

no external resistors are required

· Bus Hold retains last active bus state during 3-State,

eliminating the need for external pullup resistors

· Industrial operation at 40°C to +85°C

· Packages available:

56-pin 240 mil wide plastic TSSOP (A)

56-pin 300 mil wide plastic SSOP (V)

Toensurethehigh-impedancestateduringpoweruporpowerdown,

a clock pulse should be applied as soon as possible and OE should

LogicBlockDiagram

be tied to V through a pullup resistor; the minimum value of the

resistorisdeterminedbythecurrent-sinkingcapabilityofthedriver.

Due to OE being routed through a register, the active state of the

outputs cannot be determined prior to the arrival of the first clock

pulse.

Activebus-holdcircuitryisprovidedtoholdunusedorfloatingdata

inputs at a valid logic level.

All outputs are designed to sink up to 12mA and include 26-ohm

resistors to reduce overshoot and undershoot.

PS8372

12/17/99

12 3 4 5

中文翻译

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与PI74ALVCHR16269V相关器件

型号	品牌	获取价格	描述	数据表
PI74ALVCHR16269VEX	PERICOM	获取价格	Bus Exchanger, ALVC/VCX/A Series, 1-Func, 12-Bit, True Output, CMOS, PDSO56, 0.300 INCH, P
PI74ALVCHT16244	ETC	获取价格	Logic \| 16-Bit Buffer/Line Driver w/I/O Tol. & Bus Hold
PI74ALVCHT16244V	PERICOM	获取价格	Bus Driver, ALVC/VCX/A Series, 4-Func, 4-Bit, True Output, CMOS, PDSO48, 0.300 INCH, 0.635
PI74ALVCHT16245	ETC	获取价格	Logic \| 16-Bit Buffer/Line Driver w/I/O Tol. & Bus Hold
PI74ALVCHT16245A	ETC	获取价格	Dual 8-bit Bus Transceiver
PI74ALVCHT16245AX	PERICOM	获取价格	Bus Transceiver, ALVC/VCX/A Series, 2-Func, 8-Bit, True Output, CMOS, PDSO48, 0.240 INCH,
PI74ALVCHT16245V	ETC	获取价格	Dual 8-bit Bus Transceiver
PI74ALVCHT16501A	DIODES	获取价格	Bus Driver/Transceiver,
PI74ALVCHT16501V	DIODES	获取价格	Bus Driver/Transceiver,
PI74ALVCHT16835	ETC	获取价格	Logic \| 18-Bit Universal Bus Driver w/I/O Tol. & Bus Hold

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