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SY58035U Datasheet, PDF (1/11 Pages) Micrel Semiconductor – 4.5GHz, 1:6 LVPECL FANOUT BUFFER WITH 2:1 MUX INPUT AND INTERNAL TERMINATION | |||
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Micrel, Inc.
4.5GHz, 1:6 LVPECL FANOUT
BUFFER WITH 2:1 MUX INPUT
AND INTERNAL TERMINATION
Precision Edge®
Precision ESYd5g8e03®5U
SY58035U
FEATURES
â Provides six ultra-low skew copies of the selected
input
â 2:1 MUX input included for clock switchover
applications
â Guaranteed AC performance over temperature and
voltage:
⢠Clock frequency range: DC to > 4.5GHz
⢠<320ps IN-to-OUT tpd
⢠<110ps tr / tf times
⢠<20ps skew (output-to-output)
â Ultra-low jitter design:
⢠<1psRMS random jitter
⢠<10psPP total jitter (clock)
⢠<1psRMS cycle-to-cycle jitter
⢠<0.7psRMS crosstalk-induced jitter
â Low supply voltage operation: 2.5V and 3.3V
â Unique input termination and VT pin accepts DC-
coupled and AC-coupled inputs (CML, PECL, LVDS)
â Unique input isolation design minimizes crosstalk
â 100K LVPECL compatible output swing
â â40°C to +85°C temperature range
â Available in 32-pin (5mm à 5mm) MLF® package
Precision Edge®
DESCRIPTION
The SY58035U is a 2.5V/3.3V precision, high-speed, 1:6
fanout capable of handling clocks up to 4.5GHz. A differential
2:1 MUX input is included for redundant clock switchover
applications.
The differential input includes Micrelâs unique, 3-pin input
termination architecture that allows the device to interface
to any differential signal (AC- or DC-coupled) as small as
100mV without any level shifting or termination resistor
networks in the signal path. The outputs are LVPECL (100K,
temperature compensated), with extremely fast rise/fall times
guaranteed to be less than 110ps.
The SY58035U operates from a 2.5V ±5% supply or a
3.3V ±10% supply and is guaranteed over the full industrial
temperature range of â40°C to +85°C. For applications that
require CML outputs, consider the SY58034U or for 400mV
LVPECL outputs the SY58036U. The SY58035U is part of
Micrelâs high-speed, Precision Edge® product line.
All support documentation can be found on Micrelâs web
site at www.micrel.com.
APPLICATIONS
FUNCTIONAL BLOCK DIAGRAM
â Redundant clock distribution
â All SONET/SDH clock/data distribution
â All Fibre Channel distribution
â All Gigabit Ethernet clock distribution
IN0
50â¦
VT0
50â¦
/IN0
VREF-AC0
IN1
50â¦
VT1
50â¦
/IN1
VREF-AC1
SEL
(TTL/CMOS)
Precision Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-020707
hbwhelp@micrel.com or (408) 955-1690
1
2:1 Mux
0
Mux
1S
1:6 Fanout
Q0
/Q0
Q1
/Q1
Q2
/Q2
Q3
/Q3
Q4
/Q4
Q5
/Q5
Rev.: D Amendment: /0
Issue Date: February 2007
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