HV5122

HV5122 / HV5222 32-Channel, Serial-to-Parallel Converter with Open-Drain Outputs Features Processed with High Voltage CMOS 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 Description HV5122 / HV5222 are low-voltage serial to high-voltage parallel converters with open-drain outputs. These devices are primarily designed for use as a driver for AC electroluminescent displays. HV5122 / HV5222 can also be used in any application requiring multiple highvoltage, current-sinking output capabilities such as driving inkjet and electrostatic print heads, plasma panels, vacuum fluorescent, or large matrix LCD displays. These devices consist 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. HV5122 shifts in the counter-clockwise direction when viewed from the top of the package and HV5222 shifts in the clockwise direction. For cascading devices, HV5122 / HV5222 provides a data output buffer that reflects he 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. HV5122 / HV5222 are designed to be used in systems which either switch off the high voltage supply before changing the state of t...