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SY89859U Datasheet(PDF) 7 Page - Micrel Semiconductor |
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SY89859U Datasheet(HTML) 7 Page - Micrel Semiconductor |
7 / 13 page Micrel, Inc. SY89859U December 2007 M9999-120607-D hbwhelp@micrel.com or (408) 955-1690 7 AC Electrical Characteristics (7) VCC = +2.5V ±5% or 3.3V ±10%; VIN ≥100mV (200mVpp); R L = 50 Ω to V CC–2V; TA = –40°C to +85°C, unless otherwise stated. Symbol Parameter Condition Min Typ Max Units fMAX Maximum Operating Frequency 2.5 Gbps 2.5 3.5 GHz tpd Differential Propagation Delay IN-to-Q SEL-to-Q 360 475 640 ps 200 600 850 ps tpd Tempco Differential Propagation Delay Temperature Coefficient IN-to-Q 300 fs/ oC SEL-to-Q 400 tSKEW Output-to-Output Skew Note 8 5 20 ps Part-to-Part Skew Note 9 200 ps tJITTER Data Random Jitter (RJ) Note 10 1 psRMS Deterministic Jitter (DJ) Note 11 10 psPP Clock Cycle-to-Cycle Jitter Note 12 1 psRMS Total Jitter (TJ) Note 13 10 psPP Adjacent Channel Crosstalk-induced Jitter Note 14 0.7 psRMS tr, tf Output Rise/Fall Time (20% to 80%) At full output swing. 50 110 180 ps Notes: 7. High-frequency AC-parameters are guaranteed by design and characterization. 8. Output-to-output skew is measured between two different outputs under identical input transitions. 9. Part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the respective inputs. 10. Random jitter is measured with a K28.7 character pattern, measured at <fMAX. 11. Deterministic jitter is measured at 2.5Gbps with both K28.5 and 2 23–1 PRBS pattern. 12. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, Tn – Tn-1 where T is the time between rising edges of the output signal. 13. Total jitter definition: with an ideal clock input of frequency <fMAX, no more than one output edge in 10 12 output edges will deviate by more than the specified peak-to-peak jitter value. 14. Crosstalk-induced jitter is defined as the added jitter that results from signals applied to two adjacent channels. It is measured at the output while applying two similar, differential clock frequencies that are asynchronous with respect to each other at the inputs. Single-Ended and Differential Swings Figure 1a. Single-Ended Voltage Swing Figure 1b. Differential Voltage Swing |
Similar Part No. - SY89859U_10 |
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Similar Description - SY89859U_10 |
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