HV528

Features

Output voltage up to +200V

Shift register speed 500kHz @ V

16 high voltage outputs

High voltage backplane driver

CMOS input levels

Applications

Multiple segment EL display

Piezoelectric transducer driver

Braille driver

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Typical Application Circuit

16-Channel Serial to Parallel Converter

with High Voltage Backplane Driver and Push-Pull Outputs

General Description

The HV528 is a 200V, 16-channel serial to parallel converter.

The high voltage outputs and the backplane driver are

designed to source and sink ±1.0mA.

The high voltage outputs are controlled by a 16-bit serial shift

register, followed by a 16-bit latch. Data is shifted through

the shift registers during the low to high clock transition. A

data output buffer is provided for cascading multiple devices.

Data is transferred to the 16-bit latch when a logic level low is

applied to the LE input. Data is stored in the latch when LE is

high. Output states are controlled by the data in the latch and

by the POL pin.

Micro

Processor

EL

Segment

Panel

Low Voltage

Power Supply

High Voltage

Power Supply

DIN

CLK

LE

POL

DOUT

to DIN of another HV528 for cascading (if needed)

16

Supertex HV528

BP

VBIAS

High

Voltage

Level

Translators

&

Push-Pull

Output

Low

Voltage

Shift

Register

Latches