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SO-8

HT0440

Dual High Voltage Isolated MOSFET Driver

Ordering Information

Features

❏ ±400V input to output isolation

❏ ±700V isolation between outputs

❏ No external voltage supply required

❏ Dual isolated output drivers

❏ Option of internal or external clock

Applications

❏ Telecommunications

❏ Modems

❏ Solid state relays

❏ High side switches

❏ High end audio switches

❏ Avionics

❏ ATE

Input to Output Isolation Voltage, V

ISO

±400V

Logic Input Voltage, V

–0.5 to +7.0V

Operating Temperature

–40°C to +85°C

Storage Temperature

–55°C to +150°C

300°C

Note:

1. All voltages are referenced to ground.

2. Distance of 1.6mm from case for 10 seconds.

Pin Configuration

For detailed circuit and application information, please

refer to application note #AN-D26.

General Description

The Supertex HT0440 is a dual high voltage isolated driver

signed to drive discrete MOSFETs configured as bi-directional or

unidirectional switches. It can drive N-channel MOSFETs as high

side switches up to 400V. The HT0440 generates two indepen-

logic inputs A and B are at logic high. The internal clock of the

HT0440 can be disabled by applying an external clock signal to

the CLK pin. This allows the power dissipation and AC character-

istics to be tailored to meet specific needs. The CLK pin should be

connected to ground when not in use. The HT0440 does not

require any external power supplies. The internal supply voltage

is supplied by either of the two logic inputs A or B when they are

at logic high.

AB

CLK

GND

–V

OUTA

–V

OUTB

+V

OUTA

+V

OUTB

Input to Output

Package Option

Isolation Voltage

8-Pin Narrow Body SOIC

±400V

HT0440LG

Note: See Package Outline section for dimensions.

12/13/01

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.