SY89473U Datasheet | Micrel Semiconductor

SY89473U .. 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 100m V (200m VPP) without any level shifting or termination resistor networks in the signal path. The output is 800m V, 100K-patible, 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: .micrel.. 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 f MAX (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: - <1ps RMS random jitter - <1ps RMS cycle-to-cycle jitter - <10ps PP total jitter (clock) - <0.7ps RMS crosstalk induced jitter - Unique patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS) - 800m V (100K) LVPECL output swing - 2.5V ±5% or 3.3V ±10% supply voltage - -40°C to +85°C industrial temperature range - Available in 24-pin (4mm x 4mm) MLF® package Functional Block Diagram Applications - Clock switchover - Data...