1

SY89532/33L

Micrel, Inc.

M9999-110405

hbwhelp@micrel.com or (408) 955-1690

Input

Output

Device

Crystal Reference

BankA

BankB

BankC

SY89532L

X

LVPECL LVPECL LVPECL

SY89533L

X

LVPECL

LVDS

LVPECL

X

LVPECL LVPECL LVPECL

X

LVPECL

LVDS

LVPECL

FEATURES

Integrated synthesizer plus fanout buffers, clock

drivers , and translator in a single 64-pin package

3.3V

Low jitter: <50ps cycle-to-cycle

Low pin-to-pin skew: <50ps

33MHz to 500MHz output frequency range

Direct interface to crystal: 14MHz to 18MHz

LVPECL output (SY89532L),

LVPECL/LVDS outputs (SY89533L)

TTL/CMOS compatible control logic

3 independently programmable output frequency

banks:

• 9 differential output pairs @BankB (LVPECL/LVDS)

• 2 differential output pairs @BankA (LVPECL)

• 2 differential output pairs @BankC (LVPECL)

ExtVCO input allows synthesizer and crystal

interface to be bypassed

Available in 64-pin EPAD-TQFP

The SY89532 and SY89533L programmable clock

synthesizer/drivers are a 3.3V, high-frequency, precision PLL-

based clock driver family optimized for multi-frequency, multi-

processor server and synchronous computing applications

that require the highest precision. These devices integrate the

following blocks into a single monolithic IC:

• PLL (Phase-Lock-Loop)-based synthesizer

• Fanout buffers

• Clock generator (dividers)

• Logic translation (LVPECL, LVDS)

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 SY89534/5.

3.3V, PRECISION, 33MHz to 500MHz

PROGRAMMABLE LVPECL AND

LVDS BUS CLOCK SYNTHESIZER

DESCRIPTION

SY89532L

SY89533L

APPLICATIONS

Servers

Workstations

Parallel processor-based systems

Other high-performance computing

Communications

Rev.: E

Amendment: /0

Issue Date:

October 2005

PRODUCT SELECTION GUIDE

Note:

1.Refer to SY89534/35L data sheet for details.

Precision Edge is a registered trademark of Micrel, Inc.