SY69753AL_07 Datasheet, PDF (1/13 Pages) Micrel Semiconductor – 3.3V, 125Mbps, 155Mbps Clock and Data Recovery

SY69753AL
3.3V, 125Mbps, 155Mbps Clock
and Data Recovery
General Description
The SY69753AL is a complete Clock Recovery and
Data Retiming integrated circuit for OC-3/STS-3
applications at 155Mbps NRZ. The device is ideally
suited for SONET/SDH/ATM applications and other
high-speed data transmission systems.
Clock recovery and data retiming is performed by
synchronizing the on-chip VCO directly to the incoming
data stream. The VCO center frequency is controlled by
the reference clock frequency and the selected divide
ratio. On-chip clock generation is performed through the
use of a frequency multiplier PLL with a byte rate source
as reference.
The SY69753AL also includes a link fault detection
circuit.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
• 3.3V power supply
• SONET/SDH/ATM compatible
• Clock and data recovery for 125Mbps/155Mbps NRZ
data stream
• Two on-chip PLLs: one for clock generation and
another for clock recovery
• Selectable reference frequencies
• Differential PECL high-speed serial I/O
• Line receiver input: no external buffering needed
• Link fault indication
• 100k ECL compatible I/O
• Industrial temperature range (–40°C to +85°C)
• Lower power: fully compatible with Micrel’s
SY87701V, but with 30% less power
• Available in 32-pin EPAD-TQFP
Applications
• Ethernet media converter(m)
• SONET/SDH/ATM OC-3
• Proprietary architecture at 120Mbps to 180Mbps
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
August 2007
M9999-082107-E
[e-mail] or [phone]