SY89540U

SY89540U Precision Low Jitter 4x4 LVDS Crosspoint Switch with Internal Termination 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 DCcoupled) as small as 100mV (200mVpp) 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-tochannel 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 Features Precision Edge® 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-out...