HV508
High Voltage Liquid Crystal
Shutter Driver
Ordering Information
Device
HV
IN
Maximum Voltage
45V
Package Options
SO-8
HV508
HV508LG
Features
❏
HVCMOS
technology for high performance
❏
Logic-selectable output voltage
❏
100nF drive capability
❏
Up to 90V
P-P
❏
25µs response time
General Description
The Supertex HV508 is a 45V liquid crystal shutter driver in an SO-
8 surface mount package. It consist of two outputs that provide
square waves of opposite phase. The liquid crystal shutter is
connected between the two outputs. Its equivalent load can be
approximated as a resistor in parallel with a capacitor. Minimum
resistance is 1.0MΩ and maximum capacitance is 0.1µF.
The HV508 has three input supply voltages, HV
IN
, LV
IN
, and V
DD
.
The output’s amplitude will be either LV
IN
or HV
IN
. A logic high on
the HV
EN
input will set the output to operate from the HV
IN
supply.
A logic low on the HV
EN
input will set the output to operate from the
LV
IN
supply. The output frequency is set by the logic input fre-
quency applied on the POL input.
Pin Configuration
Absolute Maximum* Ratings
HV
IN
, high voltage input
LV
IN
, low voltage input
V
DD
, logic supply voltage
Continuous total power dissipation
Operating temperature
Storage temperature
Soldering temperature
* All voltages are referenced to GND.
For operation above 25°C ambient derate linearly at 6mW/°C.
LV
IN
POL
+60V
+7.5V
+12V
700mW
HV
EN
GND
1
2
3
4
8
7
6
5
HV
OUT1
HV
IN
V
DD
HV
OUT2
-5°C to +60°C
–65°C to +150°C
+300°C
top view
SO-8
12/13/01
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
1
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.
SUPERTEX [ Supertex, Inc ]
