SY89531L_08 Datasheet, PDF (1/16 Pages) Micrel Semiconductor – 3.3V, PRECISION, 33MHz to 500MHz PROGRAMMABLE LVPECL AND

Micrel, Inc.
3.3V, PRECISION, 33MHz to 500MHz
PROGRAMMABLE LVPECL AND HSTL BUS
CLOCK SYNTHESIZER
Precision Edge^®
Precision E^Sd^Yg⁸⁹e^5®31L
SY89531L
FEATURES
s Integrated synthesizer plus fanout buffers, clock
drivers, and translator in a single 64-pin package
s 3.3V ±10% power supply
s Low jitter: <50ps cycle-to-cycle
s Low pin-to-pin skew: <50ps
s 33MHz to 500MHz output frequency range
s Direct interface to crystal: 14MHz to 18MHz
s LVPECL/HSTL outputs
s TTL/CMOS compatible control logic
s 3 independently programmable output frequency
banks:
• 9 differential output pairs @BankB (HSTL)
• 2 differential output pairs @BankA (LVPECL)
• 2 differential output pairs @BankC (LVPECL)
s ExtVCO input allows synthesizer and crystal
interface to be bypassed
s Available in 64-pin EPAD-TQFP
DESCRIPTION
Precision Edge^®
The SY89531L programmable clock synthesizer/driver is
part of a 3.3V, high-frequency, precision PLL-based clock
synthesizer family optimized for multi-frequency, multi-
processor server, enterprise networking and other computing
applications that require the highest precision and integration.
The device integrates the following blocks into a single
monolithic IC:
• PLL (Phase-Lock-Loop)-based synthesizer
• Fanout buffers
• Clock generator (dividers)
• Logic translation (LVPECL, HSTL)
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 reference clock, see the SY89536L.
Datasheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
APPLICATIONS
s Servers
s Workstations
s Parallel processor-based systems
s Other high-performance computing
s 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*
X
LVPECL LVPECL LVPECL
SY89535L*
X
LVPECL LVDS LVPECL
SY89536L*
X
LVPECL HSTL LVPECL
*Refer to individual data sheet for details.
Precision Edge is a registered trademark of Micrel, Inc.
M9999-010808
[e-mail] or [phone]
1
Rev.: C Amendment: /0
Issue Date: January 2008