SY89645L Datasheet, PDF (1/7 Pages) Micrel Semiconductor – Precision Low Skew, 1-to-4 LVCMOS/LVTTLto-LVDS Fanout Buffer

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
September 2006
M9999-091906-A
[e-mail] or [phone]