February 2010

Doc ID 16914 Rev 1

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ESDA25LY

Automotive dual Transil™ array for ESD protection

Features

Benefits

Complies with the following standards

– 15 kV (air discharge)

– 8 kV (contact discharge)

– (human body model)

Applications

Where transient overvoltage protection in ESD

sensitive equipment is required, such as :

It is particulary recommended for the RS232 I/O

port protection where the line interface withstands

only with 2 kV ESD surges.

Figure 1.

Functional diagram

Description

The ESDA25LY is a dual monolithic voltage

suppressor designed to protect components

which are connected to data and transmission

lines against ESD.

It clamps the voltage just above the logic level

supply for positive transients, and to a diode drop

below ground for negative transients.

It can also work as bidirectionnal suppressor by

connecting only pin1 and 2.

TM: Transil is a trademark of STMicroelectronics.

A.S.D.™= Application Specific Discretes

SOT23-3L

1

2

3

1

2

3

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