HV5222
32-Channel Serial to Parallel Converter
With Open Drain Outputs
Features
► Processed with HVCMOS® technology
► Output voltages to 225V using a ramped supply
voltage
► SINK current minimum 100mA
► Shift register speed 8.0MHz
► Strobe and enable inputs
► CMOS compatible inputs
► Forward and reverse shifting options
► Hi-Rel processing available
Functional Block Diagram
Strobe
Output Enable
Data Input
General Description
The HV5222 is a low voltage serial to high voltage parallel
converter with open drain outputs. This device has been designed
for use as a driver for AC electroluminescent displays.They can
also be used in any application requiring multiple output high
voltage current sinking capabilities such as driving inkjet and
electrostatic print heads, plasma panels, vacuum fluorescent, or
large matrix LCD displays.
This device consists of a 32-bit shift register and control logic to
perform the Output Enable and all-on functions. Data is shifted
through the shift register on the high to low transition of the
clock. The HV5222 shifts in the clockwise direction when viewed
from the top of the package. A data output buffer is provided for
cascading devices. This output reflects the current status of the
last bit of the shift register. Operation of the shift register is not
affected by the OE(Output Enable) or the STR (Strobe) inputs.
The HV5222 has been designed to be used in systems which
either switch off the high voltage supply before changing the state
of the high voltage outputs or which limit the current through each
output.
HVOUT1
Clock
32 bit
Static Shift
Register
HVOUT2
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•
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28 Additional
Outputs
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•
•
HVOUT31
Data Out
HVOUT32