SY58603U Datasheet, PDF (1/13 Pages) Micrel Semiconductor – 4.25Gbps Precision CML Buffer with Internal Termination and Fail Safe Input

SY58603U
4.25Gbps Precision CML Buffer with Internal
Termination and Fail Safe Input
General Description
The SY58603U is a 2.5/3.3V, high-speed, fully
differential CML buffer optimized to provide less than
10ps_pp total jitter. The SY58603U can process clock
signals as fast as 2.5GHz or data patterns up to
4.25Gbps.
The differential input includes Micrel’s unique, 3-pin
input termination architecture that interfaces to LVPECL,
LVDS or CML differential signals, (AC-coupled 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 400mV CML, with
extremely fast rise/fall times guaranteed to be less than
85ps.
The SY58603U operates from a 2.5V ±5% supply or
3.3V ±10% supply and is guaranteed over the full
industrial temperature range (–40°C to +85°C). For
applications that require LVPECL or LVDS outputs,
consider the SY58604U and SY58605U, buffers with
800mV and 325mV output swings respectively. The
SY58603U is part of Micrel’s high-speed, Precision
Edge^® product line.
Data sheets and support documentation can be found
on Micrel’s web site at: www.micrel.com.
Functional Block Diagram
Features
Precision Edge^®
• Precision 400mV CML buffer
• Guaranteed AC performance over temperature and
voltage:
– DC-to >4.25Gbps throughput
– <300ps propagation delay (IN-to-Q)
– <85ps 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 CML output
• 2.5V ±5% or 3.3V ±10% power supply operation
• Industrial temperature range: –40°C to +85°C
• Available in 8-pin (2mm x 2mm) MLF^® package
Applications
• Data Distribution: OC-48, OC-48+FEC, XAUI
• Backplane Buffering
• SONET clock or data distribution
• Fibre Channel clock or data distribution
• Gigabit Ethernet clock or data 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.
MLF and MicroLeadFrame are registered trademarks of Amkor Technology
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
September 2006
M9999-092206-A
[e-mail] or [phone]