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Diode to V
PP
allows efficient power recovery
General Description
The HV53 and HV54 are low voltage serial to high voltage
parallel converters with push-pull outputs. These devices have
been designed for use as drivers for AC-electroluminescent
displays. They can also be used in any application requiring
multiple output high voltage current sourcing and sinking capa-
bilities such as driving plasma panels, vacuum fluorescent, or
large matrix LCD displays.
These devices consist of a 32-bit shift register, 32 latches, and
control logic to enable outputs. Q1 is connected to the first stage
of the shift register through the Output Enable logic. Data is
shifted through the shift register on the low to high transition of
the clock. The HV54 shifts in the counterclockwise direction
when viewed from the top of the package and the HV53 shifts in
the clockwise direction. A data output buffer is provided for
cascading devices. This output reflects the current status of the
last bit of the shift register (32). Operation of the shift register is
not affected by the LE (latch enable) or the OE (output enable)
inputs. Transfer of data from the shift register to the latch occurs
when the LE input is high. The data in the latch is retained when
LE is low.
Absolute Maximum Ratings
1
Supply voltage, V
DD2
Supply voltage, V
PP
Logic input levels
2
Ground current
3
Continuous total power dissipation
4
Operating temperature range
Storage temperature range
Lead temperature 1.6mm (1/16 inch)
from case for 10 seconds
Plastic
Ceramic
Plastic
Ceramic
-0.5V to +16V
-0.5V to +90V
-0.5 to V
DD
+ 0.5V
1.5A
1200mW
1500mW
-40擄C to +85擄C
-55擄C to 125擄C
-65擄C to +150擄C
260擄C
Notes:
1. Device will survive (but operation may not be specified or guaranteed) at
these extremes.
2. All voltages are referenced to GND.
3. Duty cycle is limited by the total power dissipated in the package.
4. For operation above 25擄C ambient derate linearly to maximum operating
temperature at 20mW/擄C for plastic and at 15mW/擄C for ceramic.
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.
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