SY89540U Precision Low Jitter 4x4 LVDS Crosspoint Switch with Internal Termination General Description The SY89540U is a low-jitter, low skew, high-speed Precision Edge 4x4 crosspoint switch optimized for precision telecom Features and enterprise server/storage distribution applications. The SY89540U guarantees data-rates up to 3.2Gbps Provides crosspoint switching between any input over temperature and voltage. pairs to any output pair The SY89540U differential input includes Micrels Patent pending, channel-to-channel isolation design unique, 3-pin input termination architecture that provides superior crosstalk performance directly interfaces to any differential signal (AC or DC- Guaranteed AC performance over temperature and coupled) as small as 100mV (200mV ) without any pp voltage: level shifting or termination resistor networks in the DC-to-3.2Gbps throughput signal path. The LVDS compatible outputs maintain <480ps propagation delay extremely fast rise/fall times guaranteed to be less than 120ps. <120ps rise/fall time The SY89540U features a patent-pending isolation <30ps output-to-output skew design that significantly improves on channel-to- Ultra-low jitter design: channel crosstalk performance. 95fs RMS phase jitter (Typ) The SY89540U operates from a 2.5V 5% supply and 0.7ps crosstalk induced jitter RMS is guaranteed over the full industrial temperature range Patent pending 50 input termination, extended (40C to +85C). The SY89540U is part of Micrels CMVR, and VT pin accepts DC- and AC-coupled high-speed, Precision Edge product line. differential inputs All support documentation can be found on Micrels 350mV LVDS output swing web site at www.micrel.com. Power supply 2.5V 5% 40C to +85C temperature range Available in 44-pin (7mm x 7mm) QFN package Typical Performance 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. Oct. 1, 2013 M9999-120607-C hbwhelp micrel.com or (408) 955-1690 Micrel, Inc. SY89540U Functional Block Diagram Oct., 1, 2013 2 M9999-120607-C hbwhelp micrel.com or (408) 955-1690