Microchip SY58610U Bedienungsanleitung

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SY58610U

3.2Gbps Precision, LVPECL 2:1 MUX with

Internal Termination and Fail Safe Input

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 9440800 • f-ax + 1 (408) 474000 • http://www.micrel.com-1

August 2007M9999082907--C

hbwhelp@micrel.com-or (408) 9551690

General Description

The SY58610U is a 2.5/3.3V, highspeed, fully -

differential LVPECL 2:1 MUX capable of processing

clock signals up to 2.5GHz and data patterns up to

3.2Gbps. The SY58610U is optimized to provide a

buffered output of the selected input with less than

10pspp total jitter.

The differential input includes Micrel’s unique, 3-pin

input termination architecture that interfaces to LVPECL,

LVDS or CML differential signals, (ACor DC- -coupled)

as small as 100mV (200mVPP) without any level- shifting

or termination resistor networks in the signal path. For

AC-coupled input interface applications, an integrated

reference voltage (VREF-AC) is provided to bias the VT pin.

The outputs are 800mV LVPECL, with extremely fast

rise/fall times guaranteed to be less than 130ps.

The SY58610U operates from a 2.5V ±5% supply or

3.3V ±10% supply and is guaranteed over the full

industrial temperature range (40°C to +85°C). For –

applications that require CML or LVDS outputs, consider

Micrel’s SY58609U and SY58611U, 2:1 MUX with

400mV and 325mV output swings, respectively. The

SY58610U is part of Micrel’s high-speed, Precision

Edge® product line.

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Functional Block Diagram

Precision Edge®

Features

•Precision 800mV LVPECL 2:1 MUX

•Guaranteed AC performance over temperature and

voltage:

–-DCto > 3.2Gbps throughput

–--<370ps propagation delay (INtoQ)

–<130ps rise/fall times

•Fail Safe Input

–Prevents outputs from oscillating when input is

invalid

•Unique, patented MUX input isolation design

minimizes adjacent channel crosstalk

•Ultra-low jitter design

– <1psRMS--cycletocycle jitter

– <10psPP total jitter

– <1psRMS random jitter

– <10psPP deterministic jitter

•High-speed LVPECL outputs

•2.5V ±5% or 3.3V ±10% power supply operation

•Industrial temperature range: –40°C to +85°C

•Available in 16-pin (3mm x 3mm) QFN package

Applications

•All SONET clock distribution

•Fibre Channel clock and data distribution

•Gigabit Ethernet clock and data distribution

•Backplane distribution.

Markets

•Storage

•ATE

•Test and measurement

•Enterprise networking equipment

•High-end servers

PrecisiEdge isegistertrademarkficrel, Inc.on a red o M

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