sy89540u Micrel Semiconductor, sy89540u Datasheet

sy89540u

Manufacturer Part Number

sy89540u

Description

Precision Low Jitter 4x4 Lvds Crosspoint Switch With Internal Termination

Manufacturer

Micrel Semiconductor

Datasheet

1.SY89540U.pdf (14 pages)

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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

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

All support documentation can be found on Micrel’s

web site at www.micrel.com.

Typical Performance

December 2007

Precision Edge is a registered trademark of Micrel, Inc.

MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.

product line.

) without

Precision Low Jitter 4x4 LVDS Crosspoint

Features

• Provides crosspoint switching between any input

• Patent pending, channel-to-channel isolation

• Guaranteed AC performance over temperature

• DC-to-3.2Gbps throughput

• Ultra-low jitter design:

• Patent pending 50Ω input termination, extended

• 350mV LVDS output swing

• Power supply 2.5V ±5%

• –40°C to +85°C temperature range

• Available in 44-pin (7mm x 7mm) MLF

• Pb-Free Green package

Applications

• All SONET/SDH channel select applications

• All Fibre Channel multi-channel select

• All Gigabit Ethernet multi-channel select

Switch with Internal Termination

pairs to any output pair

design provides superior crosstalk performance

and voltage:

– <480ps propagation delay

– <120ps rise/fall time

– <30ps output-to-output skew

– <1ps

– <10ps

– <0.7ps

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

differential inputs

applications

RMS

total jitter (clock)

random jitter

deterministic jitter

SY89540U

crosstalk induced jitter

hbwhelp@micrel.com

Precision Edge

M9999-120607-C

or (408) 955-1690

package

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