Supertex inc.

Supertex inc.

www.supertex.com

Doc.# DSFP-HV5812

C072413

HV5812

Features

Functional Block Diagram

20-Channel, Serial-Input,

Vacuum-Fluorescent

Display Driver for Anode/Grid

General Description

The Supertex HV5812 is a 20-channel, serial input, vacuum-

fluorescent display driver. It combines a 20-bit CMOS shift

register, data latches, and control circuitry with high voltage

MOSFET outputs. The HV5812 is primarily designed for vac-

uum-fluorescent displays.

The CMOS shift register and latches allow direct interfacing

with microprocessor based systems. Data input rates are typi-

cally over 5.0MHz with 5.0V logic supply. Especially useful for

interdigit blanking, the BLANKING input disables the output

source drives and turns on the sink drivers. Use with TTL may

require external pull-up resistors to ensure an input logic high.

BL

STROBE

DATA IN

CLK

DATA OUT

20-bit

Shift

Register

20-bit

Latch

VPP

HV

HV

HV

HV

GND

VDD