SY58013U 6GHz 1:2 Fanout Buffer/Translatorw/400mv Outputs and Internal Input Termination0 pages

1
Precision Edge®
Micrel, Inc. SY58013U
M9999-082707
hbwhelp@micrel.com or (408) 955-1690
6GHz, 1:2 FANOUT BUFFER/TRANSLATOR
w/400mV LVPECL OUTPUTS and INTERNAL
INPUT TERMINATION
Precision Edge®
SY58013U
Rev.: E Amendment: /0
Issue Date: August 2007
DESCRIPTION
.. Precision 1:2, 400mV LVPECL fanout buffer
.. Guaranteed AC performance over temperature and
voltage:
• > 6GHz fMAX clock
• < 80ps tr/tf times
• < 250ps tpd
• < 15ps max. skew
.. Low jitter performance:
• < 10psPP total jitter (clock)
• < 1psRMS random jitter (data)
• < 10psPP deterministic jitter (data)
.. Accepts an input signal as low as 100mV
.. Unique input termination and VT pin accepts DCcoupled
and AC-coupled differential
inputs: LVPECL, LVDS and CML
.. 400mV LVPECL compatible outputs
.. Power supply 2.5V ±5% and 3.3V ±10%
.. –40°C to +85°C temperature range
.. Available in 16-pin (3mm ‡ 3mm) MLF® package
FEATURES
APPLICATIONS
.. All SONET and All GigE clock distribution
.. Fibre Channel clock and data distribution
.. Backplanes
.. Data distribution: OC-48, OC-48+FEC, XAUI
.. High-end, low-skew, multiprocessor synchronous
clock distribution
The SY58013U is a 2.5V/3.3V precision, high-speed, fully
differential 1:2 LVPECL fanout buffer. Optimized to provide
two identical output copies with less than 15ps of skew and
less than 10ps(pk-pk) total jitter, the SY58013U can process
clock signals as fast as 6GHz or data patterns up to
10.7Gbps.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that interfaces to LVPECL, LVDS,
and CML differential signals, (AC- or DC-coupled) as small
as 100mV without any level-shifting or termination resistor
networks in the signal path. For AC-coupled input interface
applications, an on-board output reference voltage (VREFAC)
is provided to bias the VT pin. The outputs are 400mV
LVPECL compatible, with extremely fast rise/fall times
guaranteed to be less than 80ps.
The SY58013U 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 greater output swing or CML compatible outputs,
consider the SY58012U 1:2 fanout buffer with 800mV
LVPECL outputs, or the SY58011U 1:2 fanout buffer with
400mV CML outputs. The SY58013U 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
Precison Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
IN
/IN Q1
/Q1
Q0
/Q0
VT
50Ù
50Ù
VREF-AC
TYPICAL PERFORMANCE
2GHz Output
TIME (70ps/div.)
Output Swing
(100mV/div.)
VCC = 3.3V
2GHz with 100mV Input
Precision Edge®