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Precision Edge™

SY89321L

Micrel

DESCRIPTION

s 3.3V power supply

s 1.9ns typical propagation delay

s 275MHz f

s Differential LVPECL inputs

s 24mA LVTTL outputs

s Flow-through pinouts

s Internal input resistors: pulldown on IN, pulldown

and pullup on /IN

s Q output will default LOW with inputs open

s V

s Available in ultra-small 8-pin MLF™ (2mm x 2mm)

package

FEATURES

Precision Edge™

SY89321L

Rev.: A

Amendment: /0

Issue Date:

August 2003

The SY89321L is a differential LVPECL-to-LVTTL

translator requiring only a single +3.3V power. Because

LVPECL (Low Voltage Positive ECL) levels are used, only

+3.3V and ground are required. The SY89321L is functionally

equivalent to the SY100EPT21L, but in an ultra-small

8-lead MLF™ package that features a 70% smaller footprint.

This ultra-small package and low skew single gate design

make the SY89321L ideal for applications that require the

translation of a clock or data signal where minimal space,

low power and low cost are critical.

Under open input conditions, the /IN will be biased at

ground. This condition will force the Q output low to

provide added stability.

The SY89321L is compatible with positive ECL 100k

logic levels.

Precision Edge™

Precision Edge is a trademark of Micrel, Inc.

3.3V DIFFERENTIAL

LVPECL-to-LVTTL

TRANSLATOR

BLOCK DIAGRAM

LVPECL

IN

/IN

Q

LVTTL