Microchip Technology

The HV507 is a low voltage serial to high voltage parallel converter with 64 push-pull outputs. This device has been designed for use as a printer driver for electrostatic applications. It can also be used in any application requiring multiple output, high voltage, low current sourcing and sinking capabilities. The device consists of a 64-bit shift register, 64 latches, and control logic to perform the polarity select and blanking of the outputs. A DIR pin controls the direction of data shift through the device. With DIR grounded, DIOA is Data-In and DIOB is Data-Out; data is shifted from HVOUT64 to HVOUT1. When DIR is at logic high, DIOB is Data-In and DIOA is Data-Out: data is then shifted from HVOUT1 to HVOUT64. Data is shifted through the shift register on the low to high transition of the clock. Data output buffers are provided for cascading devices. Operation of the shift register is not affected by the LE (latch enable), BL (blanking), or the POL(polarity) inputs. Transfer of data from the shift register to the latch occurs when the LE is high. The data in the latch is stored during LE transition from high to low.

HV508 is a 45V liquid crystal shutter driver in an 8-Lead SOIC surface mount package. It consists 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 1.0M? and maximum capacitance is 0.1µF. The HV508 has three input supply voltages, HVIN, LVIN, and VDD. The output’s amplitude will be either LVIN or HVIN. A logic high on the HVEN input will set the output to operate from the HVIN supply. A logic low on the HVEN input will set the output to operate from the LVIN supply. The output frequency is set by the logic input frequency applied on the POL input.

The HV509 is a 200V, 16-channel serial to parallel converter. The high voltage outputs and the backplane driver are designed to source and sink ±1.0mA. The high voltage outputs are controlled by a 16-bit serial shift register, followed by a 16-bit latch. Data is shifted through the shift registers during the low to high clock transition. A data output buffer is provided for cascading multiple devices. Data is transferred to the 16-bit latch when a logic level low is applied to the LE input. Data is stored in the latch when LE is high. Output states are controlled by the data in the latch and by the POL pin.

The HV5122 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 HV5122 shifts in the counter-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 HV5122 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.

The HV518 is designed for vacuum fluorescent or DC plasma applications, where it can serve as a segment, digit or matrix display driver. Each device has 32 outputs, 32 latches and a 32-bit cascadable shift register. Serial data enters the shift register on the LOW-to-HIGH transition of the clock input. With latch enable (LE) HIGH, parallel data is transferred to the output buffers through a 32-bit latch. When LE is low the data is stored in the latch. When STROBE (STR) is LOW, all outputs are enabled; if STROBE is HIGH, all outputs are LOW.

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.