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SY89832U

Micrel, Inc.

M9999-092005

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

September 2005

DESCRIPTION

s Guaranteed AC performance over temperature

and voltage:

• DC-to >2.0GHz throughput

• <570ps propagation delay (IN-to-Q)

• <20ps within-device skew

• <200ps rise/fall time

s Ultra-low jitter design:

• <1ps

• <1ps

• <10ps

• <10ps

s Unique, patent-pending input termination and VT pin

accepts DC– and AC–coupled inputs

s High-speed LVDS outputs

s 2.5V voltage supply operation

s Industrial temperature range: –40

s Available in 16-pin (3mm

××××× 3mm) MLF™ package

FEATURES

2.5V ULTRA-PRECISION 1:4 LVDS

FANOUT BUFFER/TRANSLATOR

WITH INTERNAL TERMINATION

SY89832U

APPLICATIONS

s Processor clock distribution

s SONET clock distribution

s Fibre Channel clock distribution

s Gigabit Ethernet clock distribution

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The SY89832U is a 2.5V, high-speed, 2GHz differential

LVDS (Low Voltage Differential Swing) 1:4 fanout buffer

optimized for ultra-low skew applications. Within device skew

is guaranteed to be less than 20ps over supply voltage and

temperature.

The differential input buffer has a unique internal

termination design that allows access to the termination

network through a VT pin. This feature allows the device to

easily interface to different logic standards. A VREF–AC

reference output is included for AC-coupled applications.

The SY89832U is a part of Micrel's high-speed clock

synchronization family. For 3.3V applications, see SY89833L.

For applications that require a different I/O combination,

consult Micrel's website at www.micrel.com, and choose

from a comprehensive product line of high-speed, low-skew

fanout buffers, translators and clock generators.

TYPICAL PERFORMANCE

Precision Edge is a registered trademark of Micrel, Inc.

MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.

622MHz Output

TIME (200ps/div.)

IN

/IN

DQ

Q3

/Q3

Q2

/Q2

Q1

/Q1

Q0

/Q0

EN

(LVTTL/CMOS)

VT

50

Ω

50

Ω

VREF-AC

1:4

FUNCTIONAL BLOCK DIAGRAM