Precision Edge鈩?/div>
DESCRIPTION
The SY58012U 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 SY58012U can process
clock signals as fast as 5GHz or 5Gbps data.
The differential input includes Micrel鈥檚 unique, 3-pin input
termination architecture that interfaces to LVPECL, LVDS
or CML differential signals, (AC-coupled 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
(V
REF-AC
) is provided to bias the V
T
pin. The outputs are
100k LVPECL compatible, with extremely fast rise/fall times
guaranteed to be less than 110ps.
The SY58012U operates from a 2.5V
鹵5%
supply or
3.3V
鹵10%
supply and is guaranteed over the full industrial
temperature range (鈥?0擄C to +85擄C). For applications that
require faster rise/fall times, or greater bandwidth, consider
the SY58013U 1:2 fanout buffer with 400mV output swing,
or the SY58011 1:2 CML (400mV) fanout buffer. The
SY58012U is part of Micrel鈥檚 high-speed, Precision Edge鈩?/div>
product line. Data sheets and support documentation can
be found on Micrel鈥檚 web site at www.micrel.com.
APPLICATIONS
s
s
s
s
All SONET and GigE clock distribution
Fibre Channel clock and data distribution
Backplane distribution
High-end, low skew, multiprocessor synchronous
clock distribution
FUNCTIONAL BLOCK DIAGRAM
TYPICAL PERFORMANCE
2.5GHz Output
V
CC
= 3.3V
IN
50鈩?/div>
V
T
50鈩?/div>
/IN
V
REF
-AC
TIME (50ps/div.)
/Q0
Q1
/Q1
Output Swing
(200mV/div.)
Q0
2GHz with 100mV Input
Precision Edge is a trademark of Micrel , Inc.
Micro
LeadFrame and MLF are trademarks of Amkor Technology, Inc.
Rev.: A
Amendment: /0
1
Issue Date: July 2003
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