SY89473U

SY89473U www.DataSheet4U.com Precision LVPECL 2:1 Multiplexer with 1:2 Fanout and Internal Termination General Description The SY89473U is a 2.5V/3.3V precision, high-speed 2:1 differential MUX capable of processing clocks up to 2.5GHz and data up to 2.5Gbps. The 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 output is 800mV, 100K-compatible, LVPECL with fast rise/fall times guaranteed to be less than 190ps. The SY89473U 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 SY89473U is part of Micrel’s high-speed, Precision Edge® product line. For multiple-clock switchover solutions, please refer to the SY89840–SY89843U family. All support documentation can be found on Micrel’s web site at: www.micrel.com. Precision Edge ® Features Selects between two input channels and provides two copies of the selected output Guaranteed AC performance over temperature and supply voltage: - DC to 2.5Gbps data throughput - DC to 2.5GHz fMAX (clock) - <500ps In-to-Out tpd - <190ps tr/tf - <20ps Output-to-output skew Unique patented input isolation design minimizes crosstalk Ultra-low Jitter Design: - <1psRMS random jitter - <1psRMS cycle-to-cycle jitter - <10psPP total jitter (clock) - <0.7psRM...