SY56040AR Low Voltage 1.2V/1.8V/2.5V CML 4x4 Crosspoint Switch 6.4Gbps, 5GHz General Description The SY56040AR is a fully differential, low voltage Precision Edge 1.2V/1.8V/2.5V CML 4x4 Crosspoint switch. The SY56040AR can process clock signals as fast as 5GHz Features or data patterns up to 6.4Gbps. 1.2V/1.8V/2.5V CML 4x4 Crosspoint Switch The differential input includes Micrels unique, 3-pin Guaranteed AC performance over temperature and input termination architecture that interfaces to LVPECL, voltage: LVDS or CML differential signals as small as 100mV DC to 6.4Gbps throughput (200mV ) without any level-shifting or termination pp <400ps typical propagation delay (IN-to-Q) resistor networks in the signal path. For AC-coupled input interface applications, an internal voltage <25ps typical output skew reference is provided to bias the V pin. The outputs are T <80ps rise/fall times 400mV CML, with extremely fast rise/fall times Ultra-low jitter design guaranteed to be less than 80ps. <1ps cycle-to-cycle jitter RMS The SY56040AR operates from a 2.5V 5% core supply <10ps total jitter PP and a 1.2V/1.8V/2.5V 5% output supply and is <1ps random jitter RMS guaranteed over the full industrial temperature range ( <10ps deterministic jitter 40C to +85C). The SY56040AR is part of Micrels PP high-speed, Precision Edge product line. High-speed CML outputs Datasheets and support documentation can be found on 2.5V 5% , 1.2V/1.8V/2.5V 5% power supply Micrels web site at: www.micrel.com. operation Industrial temperature range: 40C to +85C Available in 44-pin (7mm x 7mm) MLF package Applications Data Distribution: OC-48, OC-48+FEC SONET clock and data distribution Fibre Channel clock and data distribution Gigabit Ethernet clock and data distribution Markets Storage ATE Test and measurement Enterprise networking equipment High-end servers Access Metro area network equipment Precision Edge is a registered trademark of Micrel, Inc. MLF and MicroLeadFrame are registered trademarks of Amkor Technology. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. SY56040AR Functional Block Diagram Truth Table Output Select Address Table Input Select Address Table SOUT1 SOUT0 OUTPUT SIN1 SIN0 INPUT 0 0 Q0 0 0 IN0 0 1 Q1 0 1 IN1 1 0 Q2 1 0 IN2 1 1 IN3 1 1 Q3 M9999-093008-A September 2008 2 hbwhelp micrel.com or (408) 955-1690