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SY89231UMGTR Datasheet(PDF) 6 Page - Micrel Semiconductor |
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SY89231UMGTR Datasheet(HTML) 6 Page - Micrel Semiconductor |
6 / 15 page Micrel, Inc. SY89231U November 2007 M9999-110507-A hbwhelp@micrel.com or (408) 955-1690 6 AC Electrical Characteristics (8) VCC = 2.5V ±5%; RL = 100 Ω across the outputs; T A = –40°C to + 85°C, unless otherwise stated. Symbol Parameter Condition Min Typ Max Units fMAX Maximum Input Operating Frequency VOUT ≥ 200mV 3.2 4.5 GHz tw Minimum Pulse Width IN, /IN 140 ps tpd Differential Propagation Delay In-to-Q 410 610 810 ps /MR(H-L)-to-Q 210 410 610 ps tRR Reset Recovery Time /MR(L-H)-to-IN 400 ps tS EN Set-up Time EN-to-IN Note 9 50 ps tH EN Hold Time IN-to-EN Note 9 250 ps tskew Part-to-Part Skew Note 10 300 ps tJITTER Clock Random Jitter Note 11 1 psRMS Cycle-to-Cycle Jitter Note 12 1 psRMS Total Jitter Note 13 10 psPP tr, tf Output Rise/Fall Time (20% to 80%) At full output swing. 90 200 ps Output Duty Cycle(÷ 3) Duty Cycle (input): 50%; f ≤3.2GHz, Note 14 46 54 % Output Duty Cycle(÷ 5) Duty Cycle (input): 50%; f ≤3.2GHz, Note 14 47 53 % Notes: 8. High-frequency AC-parameters are guaranteed by design and characterization. 9. Set-up and hold times apply to synchronous applications that intend to enable/disable before the next clock cycle. For asynchronous applications, set-up and hold do not apply. 10. 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. 11. Random Jitter is measured with a K28.7 character pattern, measured at <fMAX. 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. For Input Duty Cycle different from 50%, see “Output Duty Cycle Equation” in “Functional Description” subsection. |
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