SY89645L_11 Datasheet, PDF (1/8 Pages) Micrel Semiconductor – Precision Low Skew, 1-to-4

SY89645L
Precision Low Skew, 1-to-4
LVCMOS/LVTTL-to-LVDS Fanout Buffer
General Description
The SY89645L is a 3.3V, fully differential, low skew, 1:4
LVDS fanout buffer that accepts LVTTL or LVCMOS
inputs. It is capable of processing clock signals as fast as
650MHz. The LVDS signals are optimized to provide less
than 40ps of output skew.
The single-ended input takes a 3.3V LVTTL or LVCMOS,
with a signal swing as small as 1.2V. The outputs are
280mV LVDS, with fast rise and fall times, guaranteed to
be less than 400ps.
The SY89645L operates from a 3.3V + 5% power supply
and is guaranteed over the full industrial temperature
range (–40°C to +85°C). The SY89645L is part of Micrel’s
Precision Edge^® product line.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Block Diagram
Precision Edge^®
Features
• Four identical LVDS outputs
• CLKIN accepts LVCMOS or LVTTL input levels
• Maximum output frequency: 650MHz
• Translates LVCMOS/LVTTL input signals to LVDS levels
• <40ps output-to-output skew
• <3ns propagation delay
• <400ps rise/fall times
• 3.3V ±5% operating supply
• Industrial temperature range: –40°C to +85°C
• Available in 20-pin TSSOP
Applications
• Communications
• High-performance computing
• Clock and data distribution
Markets
• Datacom
• Telecom
• Storage
• ATE
• Test and Measurement
Precision Edge is a registered trademark of Micrel, Inc.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
June 2011
M9999-060711
[e-mail] or [phone]