SY89831U_10 Datasheet, PDF (1/11 Pages) Micrel Semiconductor – UlTRA-PRECISION 1:4 LVPECL FANOUT BUFFER/TRANSLATOR WITH INTERNAL TERMINATION

Micrel, Inc.
UlTRA-PRECISION 1:4LVPECL
FANOUT BUFFER/TRANSLATOR
WITH internal terminatiON
Precision Edge®
Precision E^Sd^Y8g⁹e^8®31U
SY89831U
FEATURES
■ Guaranteed AC performance over temperature
and voltage:
• DC-to > 2.0GHz throughput
• <450ps propagation delay (IN-to-Q)
• < 20ps within-device skew
• < 225ps rise/fall time
■ Ultra-lowjitter design:
• < 62fs RMS phase jitter (Typ)
■ Unique patent-pending input termination and VT pin
accepts DC- and AC-coupled differential inputs
■ 800mV, 100K LVPECL 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
Precision Edge^®
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.
■ Processor clock distribution
■ SONET clock distribution
■ Fibre Channel clock distribution
■ Gigabit Ethernet clock distribution
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-072210
[e-mail] or [phone]
1
Rev.: F
Amendment: /0
Issue Date: July 2010