SY89112U Datasheet, PDF (7/14 Pages) Micrel Semiconductor – 2.5/3.3V Low-Jitter, Low-Skew 1:12 LVPECL Fanout Buffer with 2:1 Input MUX and Internal Termination

Micrel, Inc.
SY89112U
AC Electrical Characteristics⁽⁶⁾
VCC = +2.5V ±5% or +3.3V ±10%; TA = –40°C to + 85°C, RL = 50Ω to VCC – 2V, unless otherwise stated.
Symbol Parameter
Condition
Min.
Typ. Max. Units
fMAX
Maximum Operating Frequency
VOUT ≥ 400mV
Propagation Delay
tPD
Propagation Delay
CLK to Q VIN ≥ 100mV
CLK_SEL to Q
2
3
GHz
300
400 550
ps
200
350 600
ps
tPD
Differential Propagation Delay Temperature
Tempco Coefficient
150
fs/^oC
tS
Set-up Time
EN-to-CLK Note 7
0
ps
tH
tSKEW
Hold Time
Output-to-Output Skew
Part-to-Part Skew
CLK-to-EN
Note 7
Note 8
Note 9
500
ps
25
ps
200
tJITTER
RMS Phase Jitter
Output = 622MHz,
Integration Range:
12kHz − 20MHz
109
fsRMS
Adjacent Channel Crosstalk-induced Jitter
tr, tf
Output Rise/Fall Time (20% to 80%)
Note 10
At full output swing.
0.7
ps(rms)
70
140 220
ps
Notes:
6. High-frequency AC-parameters are guaranteed by design and characterization.
7. 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.
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. Crosstalk is measured at the output while applying two similar differential clock frequencies that are asynchronous with respect to each other at the
inputs.
July 2010
7
M9999-072809-D
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