SY58606U

SY58606U 4.25Gbps Precision, 1:2 CML Fanout Buffer with Internal Termination and Fail Safe Input General Description The SY58606U is a 2.5/3.3V, high-speed, fully differential 1:2 CML fanout buffer optimized to provide two identical output copies with less than 15ps of skew and 100fsRMS of typical additive phase jitter. The SY58606U can process clock signals as fast as 3GHz or data patterns up to 4.25Gbps. The differential input includes Micrel’s unique, 3-pin input termination architecture that interfaces to LVPECL, LVDS or CML differential signals, (AC- or DC-coupled) as small as 100mV (200mVpp) without any level-shifting or termination resistor networks in the signal path. For AC-coupled input interface applications, an integrated voltage reference (VREF-AC) is provided to bias the VT pin. The outputs are 400mV CML, with extremely fast rise/fall times guaranteed to be less than 85ps. The SY58606U operates from a 2.5V ±5% supply or 3.3V ±10% supply and is guaranteed over the full industrial temperature range (–40°C to +85°C). For applications that require LVPECL or LVDS outputs, consider Micrel’s SY58607U and SY58608U, 1:2 fanout buffers with 800mV and 325mV output swings respectively. The SY58606U is part of Micrel’s highspeed, Precision Edge® product line. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Functional Block Diagram Features Precision 1:2, 400mV CML fanout buffer Guaranteed AC performance over temperature and vo...