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 鹵5% supply or a
3.3V 鹵10% supply and is guaranteed over the full
industrial temperature range of 鈥?0擄C to +85擄C. The
SY89850U is part of Micrel's high-speed, Precision
Edge鈩?product line.
All support documentation can be found on Micrel's
web site at
www.micrel.com.
Precision Edge鈩?/div>
Features
鈥?/div>
Guaranteed AC performance over temperature
and supply voltage:
鈥?DC- to > 3.2Gbps data rate throughput
鈥?4GHz clock f
max
(typ.)
鈥?<280ps In-to-Out t
pd
鈥?<160ps t
r
/t
f
鈥?/div>
Low power: 50mW (2.5V typ.)
鈥?/div>
Ultra-low jitter design:
鈥?<1ps
(rms)
random jitter
鈥?<10ps
(pp)
deterministic jitter
鈥?<10ps
(pp)
total jitter (clock)
鈥?/div>
Unique input termination and VT pin accepts DC-
and AC-coupled inputs (CML, PECL, LVDS)
鈥?/div>
Typical 800mV (100k) LVPECL Output Swing
鈥?/div>
Power supply 2.5V 鹵5% or 3.3V 鹵10%
鈥?/div>
Industrial temperature range 鈥?0擄C to +85擄C
鈥?/div>
Available in ultra-small (2mm x 2mm) 8-pin
MLF鈩?package
Typical Application
Applications
鈥?/div>
Backplane buffering
鈥?/div>
OC-12 to OC-192 SONET/SDN clock/data
distribution
鈥?/div>
All Gigabit Ethernet clock or data distribution
鈥?/div>
Fibre Channel distribution
Markets
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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
hbwhelp@micrel.com
or (408) 955-1690
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