SY898531L Precision Differential 3.3V Low-Skew LVPECL 1:9 Fanout Buffer Precision Edge General Description The SY898531L is a 3.3V, low-skew, 1:9 LVPECL fanout Precision Edge buffer with two selectable clock input pairs. Most standard differential input levels can be applied to the CLK, /CLK Features pair while LVPECL, CML, or SSTL input levels can be Provides nine differential 3.3V LVPECL copies applied to the PCLK, /PCLK pair. To eliminate runt pulses Selects between differential CLK, /CLK or LVPECL on the outputs during asynchronous assertion/de-assertion clock inputs of the clock enable pin, the clock enable is synchronized with the input signal. CLK, /CLK pair accepts LVDS, LVPECL, LVHSTL, SSTL, HCSL input levels The SY898531L operates from a 3.3V 5% supply and is PCLK, /PCLK pair accepts LVPECL, CML, SSTL input guaranteed over the full industrial temperature range of levels 0C to +70C. The SY898531L is part of Micrels high- speed, Precision Edge product line. Guaranteed AC performance over temperature and supply voltage: Datasheets and support documentation are available on 500MHz maximum output frequency Micrels web site at: www.micrel.com. < 2ns propagation delay (In-to-Q) Functional Block Diagram < 50ps output skew < 250ps part-to-part skew Additive phase jitter, RMS: 0.17ps (typical) 3.3V 5% supply voltage 0C to +70C temperature operating range Available in a 32-pin TQFP package Applications SONET clock distribution Backplane distribution Markets LAN/WAN Enterprise servers ATE Test and measurement 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. SY898531L Ordering Information (1) Part Number Package Type Operating Range Package Marking Lead Finish SY898531LTZ SY898531LTZ T32-1 Commercial Matte-Tin, Pb-Free with Pb-Free Bar-Line Indicator SY898531LTZ (2) SY898531LTZTR T32-1 Commercial Matte-Tin, Pb-Free with Pb-Free Bar-Line Indicator Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC electricals only. A 2. Tape and Reel. Pin Configuration 32-Pin 7mm 7mm TQFP (T32-1) Revision 2.0 June 25, 2013 2 hbwhelp micrel.com or (408) 955-1690