Supertex inc.

Supertex inc.

www.supertex.com

Doc.# DSFP-HV5630

C072313

HV5630

General Description

The HV5630 is a low-voltage serial to high-voltage parallel

converter with open drain outputs. This device has been designed

for use as a driver for AC-electroluminescent displays. It can also

be used in any application requiring multiple output high voltage

current sinking capabilities such as driving inkjet and electrostatic

print heads, plasma panels, vacuum fluorescent, or large matrix

LCD displays.

This device consists of a 32-bit shift register, 32 latches, and control

logic to perform the polarity select and blanking of the outputs. Data

is shifted through the shift register on the high to low transition of the

clock. The HV5630 shifts in the clockwise direction when viewed

from the top of the package. A data output buffer is provided for

cascading devices. This output reflects the current status of the last

bit of the shift register. Operation of the shift register is not affected

by the LE (latch enable), BL (blanking), or the POL (polarity) inputs.

Transfer of data from the shift register to the latch occurs when the

LE (latch enable) input is high. The data in the latch is stored when

LE is low.

Functional Block Diagram

32-Channel Serial to Parallel Converter

With Open Drain Outputs

POL

BL

LE

DATA

IN

CLK

DATA

OUT

HV

(Outputs 3 to 30 not shown)

Latch

Latch

HV

HV

HV

Latch

Latch

32-Bit

Shift

Register

Features