SY89850U Datasheet, PDF (1/10 Pages) Micrel Semiconductor – Precision Low-Power LVPECL Line Driver/Receiver with Internal Termination

SY89850U
Precision Low-Power LVPECL Line
Driver/Receiver with Internal Termination
General Description
The SY89850U is a 2.5V/3.3V precision, high-speed,
differential receiver capable of handling clocks up to
4GHz and data streams up to 3.2Gbps.
The differential input includes Micrel's unique, 3-pin
input termination architecture that allows users to
interface to any differential signal (AC or DC-coupled)
as small as 100mV (200mV_pp) without any level
shifting or termination resistor networks in the signal
path. The outputs are 800mV LVPECL, with extremely
fast rise/fall times guaranteed to be less than 160ps.
The SY89850U operates from a 2.5V ±5% supply or a
3.3V ±10% supply and is guaranteed over the full
industrial temperature range of –40°C to +85°C. The
SY89850U is part of Micrel's high-speed, Precision
Edge™ product line.
All support documentation can be found on Micrel's
web site at www.micrel.com.
Typical Application
Features
Precision Edge™
• Guaranteed AC performance over temperature
and supply voltage:
– DC- to > 3.2Gbps data rate throughput
– 4GHz clock f_max (typ.)
– <280ps In-to-Out t_pd
– <160ps t_r/t_f
• Low power: 50mW (2.5V typ.)
• Ultra-low jitter design:
– <1ps_(rms) random jitter
– <10ps_(pp) deterministic jitter
– <10ps_(pp) total jitter (clock)
• Unique input termination and VT pin accepts DC-
and AC-coupled inputs (CML, PECL, LVDS)
• Typical 800mV (100k) LVPECL Output Swing
• Power supply 2.5V ±5% or 3.3V ±10%
• Industrial temperature range –40°C to +85°C
• Available in ultra-small (2mm x 2mm) 8-pin
MLF™ package
Applications
• Backplane buffering
• OC-12 to OC-192 SONET/SDN clock/data
distribution
• All Gigabit Ethernet clock or data distribution
• Fibre Channel distribution
Markets
• LAN/WAN
• Enterprise Servers
• ATE
• Test and Measurement
Precision Edge is a trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
February 2005
M9999-020305
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