SY89852U Precision Low Power Differential 2:1 LVPECL MUX with Internal Termination General Description The SY89852U is a 2.5V/3.3V precision, high- speed, 2:1 differential MUX capable of handling Precision Edge clocks up to 2.5GHz and data streams up to Features 2.5Gbps. Provides a low jitter copy of the selected input The differential input includes Micrels unique, patent pending 3-pin input termination architecture that Superior alternative to the EP58 2:1 MUX allows users to interface to any differential signal Low power: 58mW (2.5V nominal, no load) (AC- or DC-coupled) as small as 100mV (200mV ) pp Guaranteed AC performance over temperature without any level shifting or termination resistor and supply voltage: networks in the signal path. The unique, patent input DC- to > 2.5Gbps data rate throughput isolation design minimizes crosstalk minimizing DC- to > 2.5GHz clock f MAX crosstalk induced jitter. The outputs are 800mV < 340ps In-to-Out t pd LVPECL, with extremely fast rise/fall time < 180ps t /t time r f guaranteed to be less than 180ps. Ultra-low Jitter Design: The SY89852U operates from a 2.5V 5% supply or <1ps random jitter (rms) a 3.3V 10% supply and is guaranteed over the full <10ps deterministic jitter (pp) industrial temperature range of 40C to +85C. <10ps total jitter (clock) (pp) The SY89852U is part of Micrels high-speed, <0.7ps crosstalk induced jitter (rms) Precision Edge product line. All support Unique, patent-pending input isolation design documentation can be found on Micrels web site at: minimizes crosstalk www.micrel.com. Unique, patent pending input termination and VT pin accepts DC-coupled and AC-coupled inputs (CML, PECL, LVDS) Typical Applications Typical 800mV (100k) LVPECL output swing Power supply 2.5V +5% or 3.3V +10% o o Industrial temperature range 40 C to +85 C Available in ultra-small (3mm x 3mm) 16-pin QFN package Applications Redundant clock distribution SONET/SDH clock/data distribution Loopback Fibre Channel distribution Markets LAN/WAN Enterprise servers ATE Test and measurement Precision Edge is a registered trademark of Micrel, Inc. October 2008 M9999-100208-D hbwhelp micrel.com or (408) 955-1690 Micrel, Inc. SY89852U (1) Ordering Information Part Number Package Operating Package Marking Lead Type Range Finish NiPdAu SY89852UMG QFN-16 Industrial 852U with bar-line designator Pb-Free (2) NiPdAu SY89852UMGTR QFN-16 Industrial 852U with bar-line designator Pb-Free Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electrical Only. A 2. Tape and Reel. Pin Configuration 16-Pin QFN October 2008 2 M9999-100208-D hbwhelp micrel.com or (408) 955-1690