Micrel, Inc.
5V/3.3V PROGRAMMABLE
FREQUENCY SYNTHESIZER
(25MHz to 400MHz)
Precision Edge
®
SY89429V
Precision Edge
®
SY89429V
FEATURES
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3.3V and 5V power supply options
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25MHz to 400MHz differential PECL outputs
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50ps peak-to-peak output jitter
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Minimal frequency over-shoot
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Synthesized architecture
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Serial 3-wire interface
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Parallel interface for power-on
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Internal quartz reference oscillator driven by quartz
crystal
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Application Note (AN-07) for ease of design-ins
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Available in 28-pin PLCC and SOIC packages
Precision Edge
®
DESCRIPTION
The SY89429V is a general purpose, synthesized clock
source targeting applications that require both serial and
parallel interfaces. Its internal VCO will operate over a
range of frequencies from 400MHz to 800MHz. The
differential PECL output can be configured to be the VCO
frequency divided by 2, 4, 8 or 16. With the output configured
to divide the VCO frequency by 2, and with a 16MHz
external quartz crystal used to provide the reference
frequency, the output frequency can be specified in 1MHz
steps.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
APPLICATIONS
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Workstations
Advanced communications
High end consumer
High-performance computing
RISC CPU clock
Graphics pixel clock
Test equipment
Other high-performance processor-based
applications
Precision Edge is a registered trademark of Micrel, Inc.
M9999-011106
hbwhelp@micrel.com or (408) 955-1690
Rev.: J
Amendment: /0
1
Issue Date: January 2006
MICREL [ MICREL SEMICONDUCTOR ]
