SY89835U Datasheet, PDF (1/10 Pages) Micrel Semiconductor – 2.5V, 2GHz (3.2 Gbps) Ultra-Precision, Differential 1:2 LVDS Fanout Buffer with Internal Termination and Fail Safe Input

SY89835U
2.5V, 2GHz (3.2 Gbps) Ultra-Precision,
Differential 1:2 LVDS Fanout Buffer with
Internal Termination and Fail Safe Input
General Description
The SY89835U is a 2.5V, high-speed 2GHz differential
Low Voltage Differential Swing (LVDS) 1:2 fanout buffer
optimized for ultra-low skew applications. Within device
skew is guaranteed to be less than 20ps over supply
voltage and temperature. A unique Fail-Safe Input (FSI)
protection prevents metastable conditions when no
signal is present or when the selected input clock fails to
a DC voltage (voltage between the pins of the
differential input drops sufficiently below 100 mV).
The SY89835U is part of Micrel’s high-speed clock
synchronization family. For applications that require a
different I/O combination, consult Micrel’s web site, and
choose from a comprehensive product line of high-
speed, low-skew fanout buffers, translators and clock
generators.
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
Functional Block Diagram
Features
Precision Edge^®
• Guaranteed AC performance over temperature and
voltage:
– DC-to > 3.2Gbps throughput
– 210ps typical propagation delay (IN-to-Q)
– <20ps within-device skew
– <150ps rise/fall times
• Fail Safe Input
– Prevents outputs from oscillating
• Ultra-low jitter design
– <1ps_RMS cycle-to-cycle jitter
– <10ps_PP total jitter
– <1ps_RMS random jitter
– <10ps_PP deterministic jitter
• High-speed LVDS outputs
• 2.5V ±5% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 8-pin (2mm x 2mm) MLF™ package
Applications
• Clock or data distribution
• SONET clock or data distribution
• Fibre Channel clock or data distribution
• Gigabit Ethernet clock or data distribution
Markets
• DataCom
• Telecom
• Storage
• ATE
• Precision test and measurement
Precision Edge is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame are trademarks of Amkor Technology, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
February 2006
M9999-020706
[e-mail] or [phone]