Microchip SY89540U Bedienungsanleitung

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SY89540U

Precision Low Jitter 4x4 LVDS Crosspoint

Switch with Internal Termination

Oct. 1, 2013 M9999-120607-C

[email protected] or (408) 955-1690

General Description

The SY89540U is a low-jitter, low skew, high-speed

4x4 crosspoint switch optimized for precision telecom

and enterprise server/storage distribution applications.

The SY89540U guarantees data-rates up to 3.2Gbps

over temperature and voltage.

The SY89540U differential input includes Micrel’s

unique, 3-pin input termination architecture that

directly interfaces to any differential signal (AC or DC-

coupled) as small as 100mV (200mV

pp

) without any

level shifting or termination resistor networks in the

signal path. The LVDS compatible outputs maintain

extremely fast rise/fall times guaranteed to be less

than 120ps.

The SY89540U features a patent-pending isolation

design that significantly improves on channel-to-

channel crosstalk performance.

The SY89540U operates from a 2.5V ±5% supply and

is guaranteed over the full industrial temperature range

(–40°C to +85°C). The SY89540U is part of Micrel’s

high-speed, Precision Edge

®

product line.

All support documentation can be found on Micrel’s

web site at www.micrel.com.

Typical Performance

Precision Edge

®

Features

•Provides crosspoint switching between any input

pairs to any output pair

•Patent pending, channel-to-channel isolation design

provides superior crosstalk performance

•Guaranteed AC performance over temperature and

voltage:

•DC-to-3.2Gbps throughput

–<480ps propagation delay

–<120ps rise/fall time

–<30ps output-to-output skew

•Ultra-low jitter design:

–95fs RMS phase jitter (Typ)

–0.7ps

RMS

crosstalk induced jitter

•Patent pending 50Ω input termination, extended

CMVR, and VT pin accepts DC- and AC-coupled

differential inputs

•350mV LVDS output swing

•Power supply 2.5V ±5%

•–40°C to +85°C temperature range

•Available in 44-pin (7mm x 7mm) QFN package

•Pb-Free Green package

Applications

•All SONET/SDH channel select applications

•All Fibre Channel multi-channel select applications

•All Gigabit Ethernet multi-channel select

applications

Precision Edge is a registered trademark of Micrel, Inc.

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