SY58605U: 3.2Gbps Precision, LVDS Buffer with Internal Termination and Fail Safe Input0 pages

SY58605U
3.2Gbps Precision, LVDS Buffer with
Internal Termination and Fail Safe Input
Precision Edge is a registered trademark of Micrel, Inc.
MLF and MicroLeadFrame are registered trademarks of Amkor Technology.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2007
M9999-082907-B
hbwhelp@micrel.com or (408) 955-1690
General Description
The SY58605U is a 2.5V, high-speed, fully differential
LVDS buffer optimized to provide less than 10pspp total
jitter. The SY58605U can process clock signals as fast
as 2GHz or data patterns up to 3.2Gbps.
The differential input includes Micrel’s unique, 3-pin
input termination architecture that interfaces to LVPECL,
LVDS or CML differential signals, (AC- or DC-coupled)
as small as 100mV (200mVpp) without any level-shifting
or termination resistor networks in the signal path. For
AC-coupled input interface applications, an integrated
voltage reference (VREF-AC) is provided to bias the VT pin.
The output is 325mV LVDS, with rise/fall times
guaranteed to be less than 100ps.
The SY58605U operates from a 2.5V ±5% supply and is
guaranteed over the full industrial temperature range
(–40°C to +85°C). For applications that require CML or
LVPECL outputs, consider Micrel’s SY58603U and
SY58604U, buffers with 400mV and 800mV output
swings respectively. The SY58605U is part of Micrel’s
high-speed, Precision Edge® product line.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Functional Block Diagram
Precision Edge®
Features
• Precision 325mV LVDS buffer
• Guaranteed AC performance over temperature and
voltage:
– DC-to > 3.2Gbps throughput
– <300ps typical propagation delay (IN-to-Q)
– <100ps rise/fall times
• Fail Safe Input
– Prevents output from oscillating when input is
invalid
• Ultra-low jitter design
– <1psRMS cycle-to-cycle jitter
– <10psPP total jitter
– <1psRMS random jitter
– <10psPP deterministic jitter
• High-speed LVDS output
• 2.5V ±5% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 8-pin (2mm x 2mm) MLF® package
Applications
• All SONET clock and data distribution
• Fibre Channel clock and data distribution
• Gigabit Ethernet clock and data distribution
• Backplane distribution
Markets
• Storage
• ATE
• Test and measurement
• Enterprise networking equipment
• High-end servers
• Access
• Metro area network equipment