1

02/96/022

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.

HV57708

Device

80 Lead Quad

80 Lead Quad

80 Lead Quad

Ceramic Gullwing

Plastic Gullwing

Ceramic Gullwing

Die

(MIL-STD-883 Processed*)

(MIL-STD-883 Processed*)

HV57708

HV57708DG

HV57708PG

RBHV57708DG

HV57708X

* For Hi-Rel process flows, refer to page 5-3 of the Databook.

32 MHz, 64-Channel Serial To Parallel Converter

With Push-Pull Outputs

Ordering Information

Package Options

General Description

The HV577 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 electroluminescent displays. It can also be used

in any application requiring multiple output high-voltage current

sourcing and sinking capability such as driving plasma panels,

vacuum fluorescent displays, or large matrix LCD displays.

The device has 4 parallel 16-bit shift registers, permitting data

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

also 64 latches and control logic to perform the polarity select and

blanking of the outputs. HVout1 is connected to the first 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 V

data output buffer is provided for cascading devices. This 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.

Features

❏ 5V CMOS logic

❏ Output voltages up to 80V

❏ Low power level shifting

❏ 32MHz equivalent data rate

❏ Latched data outputs

❏ Forward and reverse shifting options (DIR pin)

❏ Diode to V

❏ Outputs may be hot switched

❏ Hi-Rel processing available

Absolute Maximum Ratings

Supply voltage, V

DD

1

-0.5V to +7.5V

1

-0.5V to +90V

1.5A

Plastic

1200mW

Ceramic

1900mW

Operating temperature range

Plastic

-40 to 85°C

Ceramic

-55°C to 125°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 maximum operating

temperature at 20mW/°C for plastic and at 19mW/°C for ceramic.

For detailed circuit and application information, please refer

to application note AN-H3.