SY56020R Low Voltage 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer 6.4Gbps with Equalization General Description The SY56020R is a fully-differential, low-voltage Precision Edge 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer with input equalization. The SY56020R can process clock signals Features as fast as 4.5GHz or data patterns up to 6.4Gbps. 1.2V/1.8V/2.5V CML 1:4 Fanout Buffer The differential input includes Micrels unique, 3-pin input Equalizes 9, 18, 27 inches of FR4 termination architecture that interfaces to CML Guaranteed AC performance over temperature and differential signals, without any level-shifting or voltage: termination resistor networks in the signal path. The differential input can also accept AC-coupled LVPECL DC-to > 6.4Gbps Data throughput and LVDS signals. Input voltages as small as 200mV DC-to > 4.5GHz Clock throughput (400mV ) are applied before the 9, 18 or 27 FR4 pp <280 ps propagation delay (IN-to-Q) transmission line. For AC-coupled input interface <15ps within-device skew applications, an internal voltage reference is provided to <90ps rise/fall times bias the V pin. The outputs are CML, with extremely T Ultra-low jitter design fast rise/fall times guaranteed to be less than 90ps. <1ps random jitter RMS The SY56020R operates from a 2.5V 5% core supply and a 1.2V, 1.8V or 2.5V 5% output supply and is High-speed CML outputs guaranteed over the full industrial temperature range 2.5V 5% V , 1.2/1.8V/2.5V 5% V power supply CC CCO (40C to +85C). The SY56020R is part of Micrels operation high-speed, Precision Edge product line. Industrial temperature range: 40C to +85C Datasheets and support documentation can be found on Available in 16-pin (3mm x 3mm) QFN package Micrels web site at: www.micrel.com. Applications Functional Block Diagram Data distribution SONET clock and data distribution Fiber Channel clock and data distribution Gigabit Ethernet clock and data distribution Markets Storage ATE Test and measurement Enterprise networking equipment High-end servers Metro area network equipment Precision Edge is a registered trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. SY56020R Ordering Information Part Number Package Type Operating Range Package Marking Lead Finish NiPdAu SY56020RMG QFN-16 Industrial R020 with Pb-Free bar-line indicator Pb-Free (2) NiPdAu SY56020RMGTR QFN-16 Industrial R020 with Pb-Free bar-line indicator Pb-Free Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electricals only. A 2. Tape and Reel. Pin Configuration 16-Pin QFN Truth Table EQ Equalization FR4 6mil Stripline LOW 9 FLOAT 18 HIGH 27 M9999-111810-A November 2010 2 hbwhelp micrel.com or (408) 955-1690