SY58605U_10 Datasheet, PDF (1/12 Pages) Micrel Semiconductor – 3.2Gbps Precision, LVDS Buffer with

SY58605U
3.2Gbps Precision, LVDS Buffer with
Internal Termination and Fail Safe Input
General Description
The SY58605U is a 2.5V, high-speed, fully differential
LVDS buffer optimized to provide less than 10ps_pp 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 (200mV_pp) without any level-shifting
or termination resistor networks in the signal path. For
AC-coupled input interface applications, an integrated
voltage reference (V_REF-AC) is provided to bias the V_T 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
Features
Precision Edge^®
• 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
– <1ps_RMS cycle-to-cycle jitter
– <10ps_PP total jitter
– <1ps_RMS random jitter
– <10ps_PP 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) DFN 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
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
August 2007
M9999-082907-B
[e-mail] or [phone]