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Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability

indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to

workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the

Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.

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Device

HV

Package Options

SO-8

HV508

45V

HV508LG

HV508

High Voltage Liquid Crystal

Shutter Driver

Ordering Information

General Description

The Supertex HV508 is a 45V liquid crystal shutter driver in an SO-

8 surface mount package. It consist of two outputs that provide

square waves of opposite phase. The liquid crystal shutter is

connected between the two outputs. Its equivalent load can be

approximated as a resistor in parallel with a capacitor. Minimum

resistance is 1.0MΩ and maximum capacitance is 0.1µF.

The HV508 has three input supply voltages, HV

The output’s amplitude will be either LV

the HV

A logic low on the HV

LV

The output frequency is set by the logic input fre-

quency applied on the POL input.

Features

❏ Logic-selectable output voltage

❏ 100nF drive capability

❏ Up to 90V

P-P

❏ 25µs response time

Absolute Maximum* Ratings

HV

+60V

LV

+7.5V

V

+12V

Continuous total power dissipation

700mW

Operating temperature

-5°C to +60°C

Storage temperature

–65°C to +150°C

Soldering temperature

+300°C

* All voltages are referenced to GND.

For operation above 25°C ambient derate linearly at 6mW/°C.

Pin Configuration

LV

IN

HV

OUT1

POL

HV

IN

HV

EN

V

DD

GND

HV

OUT2

top view

SO-8