SY58609U Datasheet | Micrel Semiconductor

4.25Gbps Precision, CML 2:1 MUX with Internal Termination and Fail Safe Input General Description The SY58609U is a 2.5/3.3V, high-speed, fully differential CML 2:1 MUX capable of processing clock signals up to 2.5GHz and data patterns up to 4.25Gbps. The SY58609U is optimized to provide a buffered output of the selected input with less than 20ps of skew and less than 10pspp total jitter. 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 100m V (200m Vpp) without any level-shifting or termination resistor networks in the signal path. For AC-coupled input interface applications, an integrated reference voltage (VREF-AC) is provided to bias the VT pin. The outputs are 400m V CML, with extremely fast rise/fall times guaranteed to be less than 90ps. The SY58609U 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 SY58610U and SY58611U, 2:1 MUX with 800m V and 325m V output swings, respectively. The SY58609U is part of Micrel’s high-speed, Precision Edge® product line. Datasheets and support documentation can be found on Micrel’s web site at: .micrel.. Functional Block Diagram Features Precision Edge® - Precision 400m V CML 2:1 MUX - Guaranteed AC performance over temperature and voltage: - DC-to > 4.25Gbps throughput - <370ps propagation delay (IN-to-Q) - <90ps rise/fall times - Fail Safe Input - Prevents outputs from oscillating when input is invalid - Unique, patented MUX input isolation design minimizes adjacent channel crosstalk - Ultra-low jitter design - <1ps RMS cycle-to-cycle jitter - <10ps PP total jitter - <1ps RMS random jitter - <10ps PP deterministic jitter - High-speed CML outputs - 2.5V ±5% or 3.3V ±10% power supply operation - Industrial temperature range: - 40°C to...