SY89852U

SY89852U Precision Low Power Differential 2:1 LVPECL MUX with Internal Termination General Description The SY89852U is a 2.5V/3.3V precision, highspeed, 2:1 differential MUX capable of handling clocks up to 2.5GHz and data streams up to 2.5Gbps. The differential input includes Micrel’s unique, patent pending 3-pin input termination architecture that allows users to interface to any differential signal (AC- or DC-coupled) as small as 100mV (200mVpp) without any level shifting or termination resistor networks in the signal path. The unique, patent input isolation design minimizes crosstalk minimizing crosstalk induced jitter. The outputs are 800mV LVPECL, with extremely fast rise/fall time guaranteed to be less than 180ps. The SY89852U operates from a 2.5V ±5% supply or a 3.3V ±10% supply and is guaranteed over the full industrial temperature range of –40°C to +85°C. The SY89852U 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 Applications Precision Edge is a registered trademark of Micrel, Inc. October 2008 Features Precision Edge® Provides a low jitter copy of the selected input Superior alternative to the EP58 2:1 MUX Low power: 58mW (2.5V nominal, no load) Guaranteed AC performance over temperature and supply voltage: – DC- to > 2.5Gbps data rate throughput – DC- to > 2.5GHz clock fMAX – < 340ps In-to-Out tpd – < 180ps tr/tf time Ultra-low Jitter Design: – <1p...