HV513_13 Datasheet, PDF (1/10 Pages) Supertex, Inc – 8-Channel Serial to Parallel Converter with High Voltage Push-Pull Outputs, POL, Hi-Z, and Short Circuit Detect

Supertex inc.
HV513
8-Channel Serial to Parallel Converter with High Voltage
Push-Pull Outputs, POL, Hi-Z, and Short Circuit Detect
Features
►►HVCMOS^® technology
►►Operating output voltage of 250V
►►Low power level shifting from 5.0 to 250V
►► Shift register speed 8.0MHz @ V_DD = 5.0V
►►8 latch data outputs
►►Output polarity and blanking
►►Output short circuit detect
►►Output high-Z control
►►CMOS compatible inputs
Applications
►► Piezoelectric transducer driver
►► Braille driver
►► Weaving applications
►► Printer drivers
►► MEMs
►► Displays
General Description
The HV513 is a low voltage serial to high voltage parallel converter
with 8 high voltage push-pull outputs. This device has been designed
to drive small capacitve loads such as piezoelectric transducers. It can
also be used in any application requiring multiple high voltage outputs,
with medium current source and sink capabilities.
The device consists of an 8-bit shift register, 8 latches, and control logic
to perform the polarity select and blanking of the outputs. Data is shifted
through the shift register on the low to high transition of the clock. A data
output buffer is provided for cascading devices. Operation of the shift
register is not affected by the LE, BL, POL, or the HI-Z control inputs.
Transfer of data from the shift register to the latch occurs when the LE
is high. The data in the latch is stored when LE is low. A high-Z (HI-Z)
pin is provided to set all the outputs in a high-Z state.
All outputs have short circuit protection that detects if the outputs have
reached the required output state. If output does not track the required
state, then the SHORT pin will be low. This output will pulse low during
the output transistion period under normal operation; see SC Timing
Diagram for details.
All outputs will have a break-before-make circuitry to reduce cross-over
current during output state changes.
The POL, BL, LE, and HI-Z inputs have an internal pull up resistor.
Typical Application Circuit
Low Voltage
Power Supply
High Voltage
Power Supply
FPGA
DIN
CLK _{Low Voltage}
LE
BL
POL
Shift Register
Latches
Output
8
/
HiZ Controller
HV_OUT1
High Voltage
Level
Translators
&
Push-Pull
Output
Buffers
HV_OUT8
DOUT
D_{IN to the next HV513 for cascading}
SHORT
Piezo
Element
Supertex HV513
Doc.# DSFP-HV513
C072413
Supertex inc.
www.supertex.com