SY89851U

www.DataSheet4U.com SY89851U Low Power, 3GHz, 1:2 LVPECL Fanout Buffer/Translator with Internal Termination General Description The SY89851U is a low jitter, low skew, high-speed 1:2 differential fanout buffer optimized for precision telecom and enterprise server distribution applications. The SY89851U distributes clock frequencies from DC to >3GHz, and data rates to 2.5Gbps guaranteed over temperature and voltage. The SY89851U 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 (200mVpp) without any level shifting or termination resistor networks in the signal path. The outputs are 800mV, 100Kcompatible LVPECL with extremely fast rise/fall time guaranteed to be less than 180ps. The SY89851U operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of –40°C to +85°C. The SY89851U 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. Precision Edge® Features Precision 1:2, 800mV LVPECL fanout buffer Low power consumption: 80mW typ. (2.5V) Guaranteed AC performance over temperature and voltage: – DC to >3GHz clock throughput – <340ps propagation delay – <180ps rise/fall time – <20ps output-to-output skew Ultra-low jitter design: – <1psRMS random jitter – <10psPP deterministic jitter – <10psPP total jitter (clock) ...