Precision Edge® 3.3V, 1.5GHz ÷1/÷2 DIFFERENTIAL SY100E222L ® LVECL/LVPECL PROGRAMMABLE CLOCK Precision Edge SY100E222L GENERATOR AND 1:15 FANOUT BUFFER Micrel, Inc. FEATURES ■ Four programmable output banks and 15 total LVPECL-compatible differential outputs ■ Pin-compatible, plug-in replacement to MC100LVE222FA ■ fMAX clock = 1.5GHz ■ 50ps output-to-output skew ■ Four output banks with independent ÷1, ÷2 frequency control ■ 100k compatible I/O ■ Power supply 3.3V ±10% ■ –40°C to +85°C temperature range ■ Available in 52-pin LQFP package Precision Edge® DESCRIPTION The SY100E222L is a low-skew, low-jitter device capable of receiving a high-speed LVECL/LVPECL input in either a single-ended or differential configuration. For single-ended configurations, a VBB output reference is supplied by the SY100E222L. A 2:1 input multiplexer selects from two differential input pairs by means of the CLK_SEL input select. The internal programmable divider for each of the four banks generates a ÷1 or ÷2 frequency of the selected input. The ÷1/÷2 divider outputs can be asynchronously synchronized with the master reset (MR) input so that the outputs will start out in a known state. The 15 total outputs are partitioned into four independently selected output banks in a 2/3/4/6 fanout configuration. Each of the four banks can independently select the ÷1 or ÷2 output frequency by means of the four separate frequency select pins (FSELA-FSELD) inputs. The SY100E222L is pin-for-pin compatible with the MC100LVE222FA device. The SY100E222L is part of a Micrel’s Precision Edge™ product family. For other integrated clock divider plus fanout buffer options, consider Micrel’s SY89200 family. All support documentation can be found on Micrel’s web site at www.micrel.com. APPLICATIONS ■ SONET/SDH channel applications ■ Fibre Channel multi-channel applications ■ Gigabit Ethernet multi-channel applications FUNCTIONAL BLOCK DIAGRAM 1:2 FOB QA0 CLK_SEL /QA0 CLK0 /CLK0 VBB CLK1 ÷1 2:1 MUX QA1 2:1 MUX CLK ÷2 /QA1 1:3 FOB /CLK1 QB0 MR FSELA /QB0 QB1 /QB1 CROSS REFERENCE TABLE QB2 2:1 MUX /QB2 1:4 FOB QC0 Micrel Part Number ON Semiconductor SY100E222LTI MC100LVE222FA SY100E222LTI TR MC100LVE222FAR2 /QC0 FSELB QC1 /QC1 QC2 2:1 MUX /QC2 QC3 /QC3 1:6 FOB FSELC QD0 /QD0 QD1 2:1 MUX /QD1 QD2 /QD2 FSELD QD3 /QD3 QD4 /QD4 QD5 /QD5 Precision Edge is a registered trademark of Micrel, Inc. M9999-032206 [email protected] or (408) 955-1690 Rev.: B 1 Amendment: /0 Issue Date: March 2006