SY89536L Datasheet, PDF (1/16 Pages) Micrel Semiconductor – 3.3V, PRECISION, 33MHz to 500MHz PROGRAMMABLE LVPECL AND HSTL BUS CLOCK SYNTHESIZER

3.3V, PRECISION, 33MHz to 500MHz
PROGRAMMABLE LVPECL AND HSTL
Precision Edge™
SY89536L
BUS CLOCK SYNTHESIZER
FEATURES
■ Integrated synthesizer plus fanout buffers, clock
dividers, and translator in a single 64-pin package
■ Accepts any reference input between 14MHz to
160MHz (single-ended or differential)
■ 33MHz to 500MHz output frequency range
■ LVPECL and HSTL outputs
■ 3.3V ±10% power supply
■ Low jitter: <50ps cycle-to-cycle
■ Low pin-to-pin skew: <50ps
■ TTL/CMOS compatible control logic
■ 3 independently programmable output frequency
banks:
• 9 differential output pairs @BankB (HSTL)
• 2 differential output pairs @BankA (LVPECL)
• 2 differential output pairs @BankC (LVPECL)
■ Available in 64-pin EPAD-TQFP
DESCRIPTION
Precision Edge™
The SY89536L programmable clock synthesizer is part
of a 3.3V, high-frequency, precision PLL-based clock
synthesizer family optimized for multi-frequency, large clock-
tree applications. This device integrates the following blocks
into a single monolithic IC:
• PLL (Phase-Lock-Loop)-based synthesizer
• Fanout buffer
• Clock generator (divider)
• Logic translation (LVPECL, HSTL)
The SY89536L includes a flexible input design that
accepts any reference input; single-ended LVTTL/CMOS,
SSTL and differential LVPECL, LVDS, HSTL, and CML.
This level of integration minimizes the additive jitter and
part-to-part skew associated with the discrete alternative,
resulting in superior system-level timing as well as reduced
board space and power. For applications that must interface
to a crystal oscillator, see the SY89531L.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
APPLICATIONS
■ Servers
■ Workstations
■ Parallel processor-based systems
■ Other high-performance computing
■ Communications
PRODUCT SELECTION GUIDE
Input
Output
Device
Crystal Reference BankA BankB BankC
SY89531L* X
LVPECL HSTL LVPECL
SY89532L* X
LVPECL LVPECL LVPECL
SY89533L* X
LVPECL LVDS LVPECL
SY89534L*
SY89535L*
X
LVPECL LVPECL LVPECL
X
LVPECL LVDS LVPECL
SY89536L
X
LVPECL HSTL LVPECL
*Refer to individual data sheet for details.
Precision Edge is a trademark of Micrel, Inc.
1
Rev.: A Amendment: /0
Issue Date: June 2003