MICROPOWER,

ULTRA-SENSITIVE

HALL-EFFECT SWITCHES

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

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The products described herein are manufactured under one or more

of the following U.S. patents: 4,761,569; 5,619,137; 5,621,319. In

addition, a patent is pending for Allegro's magnetic pole-independent

feature. Allegro has several foreign counterpart patents as well.

Allegro has not licensed any of these patents to any third party.

Allegro MicroSystems, Inc. reserves the right to make, from time to

time, such departures from the detail specifications as may be required

to permit improvements in the performance, reliability, or

manufacturability of its products. Before placing an order, the user is

cautioned to verify that the information being relied upon is current.

Allegro products are not authorized for use as critical components

in life-support appliances, devices, or systems without express written

approval.

The information included herein is believed to be accurate and

reliable. However, Allegro MicroSystems, Inc. assumes no responsibil-

ity for its use; nor for any infringements of patents or other rights of

third parties that may result from its use.