1

General Description

The HV574 is a low-voltage serial to high-voltage parallel con-

verter with push-pull outputs. This device has been designed for

use as a driver for printer applications. It can also be used in any

application requiring multiple output high-voltage current sour-

cing and sinking capability such as driving plasma panels, vac-

uum fluorescent displays, or large matrix LCD displays.

The device has 4 parallel 20-bit dynamic shift registers, permitting

data rates 4X the speed of one ( they are clocked together).

There are 80 static latches and control logic to perform the polarity

select and blanking of the outputs. HV

stage of the first shift register through the polarity and blanking

logic. Data is shifted through the shift registers on the logic low to

high transition of the clock. The DIR pin causes CCW shifting

when connected to GND, and CW shifting when connected to

output reflects the current status of the last bit of the shift register

(HV

(latch enable), BL (blanking), or the POL (polarity) inputs. Trans-

fer of data from the shift registers to the latches occurs when the

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

when LE is low.

Absolute Maximum Ratings

1

-0.5V to +7.5V

Output voltage, V

PP

1

-0.5V to +90V

1.5A

1200mW

Operating temperature range

-40 to 85°C

Storage temperature range

-65°C to +150°C

Lead temperature 1.6mm (1/16 inch)

260°C

from case for 10 seconds

Notes:

1. All voltages are referenced to GND.

2. Limited by the total power dissipated in the package.

3. For operation above 25°C ambient derate linearly to 85°C at 20mW/°C.

HV574

Device

100 Lead Quad

Plastic Gullwing

Die

HV574

HV574PG

HV574X

100 MHz, 80-Channel Serial To Parallel Converter

With Push-Pull Outputs

Ordering Information

Package Options

Features

❏ 5V CMOS logic

❏ Output voltages up to 80V

❏ Low power level shifting

❏ 100MHz equivalent data rate using four dynamic

shift registers

❏ Static latched data outputs

❏ Forward and reverse shifting options (DIR pin)

❏ Diode to V

❏ Outputs may be hot switched

❏ Hi-Rel processing available

11/12/01

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.