SY89831U_14 Datasheet, PDF (1/14 Pages) Micrel Semiconductor – Ultra-Precision 1:4 LVPECL Fanout Buffer/Translator with Internal Termination

SY89831U
Ultra-Precision 1:4 LVPECL Fanout
Buffer/Translator with Internal Termination
Precision Edge^®
General Description
The SY89831U is a high-speed, 2GHz differential LVPECL
1:4 fanout buffer optimized for ultra-low skew applications.
Within-device skew is guaranteed to be less than 20ps
(5ps typ.) over supply voltage and temperature. The
differential input buffer has a unique internal termination
design that allows access to the termination network
through a VT pin. This feature allows the device to easily
interface to different logic standards. A VREF-AC
reference output is included for AC-coupled applications.
The SY89831U is a part of Micrel's high-speed clock
synchronization family. For applications that require a
different I/O combination, consult Micrel’s website at:
www.micrel.com, and choose from a comprehensive
product line of high-speed, low-skew fanout buffers,
translators, and clock generators.
Datasheets and support documentation are available on
Micrel’s web site at: www.micrel.com.
Precision Edge^®
Features
• Guaranteed AC performance over temperature and
voltage
− DC-to 2.5GHz throughput (typical)
− 350ps propagation delay (IN-to-Q) (typical)
− 5ps within-device skew (typical)
− 150ps rise/fall time (typical)
• Ultra-low jitter design
− 62fs RMS phase jitter (typical)
• Unique patent-pending input termination and VT pin
accepts DC- and AC-coupled differential inputs
• 800mV, 100K LVPECL typical output swing
• Power supply 2.5V ±5% or 3.3V ±10%
• Industrial temperature range: –40°C to +85°C
• Available in 16-pin (3mm x 3mm) MLF^® package
Applications
• Processor clock distribution
• SONET clock distribution
• Fibre Channel clock distribution
• Gigabit Ethernet clock distribution
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
January 17, 2014
Revision 7.0
[e-mail] or [phone]