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| Micrel, Inc. 3.3V, 1.5GHz /1//2 DIFFERENTIAL SY100E222L (R) LVECL/LVPECL PROGRAMMABLE CLOCK Precision Edge SY100E222L GENERATOR AND 1:15 FANOUT BUFFER Precision Edge(R) FEATURES s Four programmable output banks and 15 total LVPECL-compatible differential outputs s Pin-compatible, plug-in replacement to MC100LVE222FA s fMAX clock = 1.5GHz s 50ps output-to-output skew s Four output banks with independent /1, /2 frequency control s 100k compatible I/O s Power supply 3.3V 10% s -40C to +85C temperature range s Available in 52-pin LQFP package Precision Edge(R) 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 EdgeTM 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 s SONET/SDH channel applications s Fibre Channel multi-channel applications s Gigabit Ethernet multi-channel applications FUNCTIONAL BLOCK DIAGRAM 1:2 FOB CLK_SEL CLK0 /CLK0 VBB CLK1 /CLK1 MR FSELA 2:1 MUX CLK /2 /1 2:1 MUX 1:3 FOB QA0 /QA0 QA1 /QA1 QB0 /QB0 QB1 /QB1 2:1 MUX 1:4 FOB QB2 /QB2 CROSS REFERENCE TABLE Micrel Part Number SY100E222LTI SY100E222LTI TR ON Semiconductor MC100LVE222FA MC100LVE222FAR2 QC0 FSELB /QC0 QC1 /QC1 QC2 2:1 MUX /QC2 QC3 /QC3 FSELC 1:6 FOB 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 hbwhelp@micrel.com or (408) 955-1690 Rev.: B Amendment: /0 1 Issue Date: March 2006 |
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