HV9308/HV9408 32-Channel Serial-to-Parallel Converters with High-Voltage Push-Pull Outputs Features General Description 5V CMOS Compatible Inputs The HV9308 and HV9408 are low-voltage to high-voltage serial-to-parallel converters with push-pull Low-Power Level Shifting outputs. These devices are designed as drivers for 8 MHz Shift Register Speed AC-electroluminescent displays. They can also be Latched Data Outputs used in any application requiring multiple-output Diode to V allows Efficient Power Recovery PP high-voltage low-current sourcing-and-sinking capabilities, such as driving plasma panels, vacuum Applications fluorescent displays, and large matrix LCD displays. Each device consists of a 32-bit Shift register, 32 Piezoelectric Driver latches and control logic to perform the polarity select Inkjet Printer Driver and blanking of the outputs. HV 1 is connected to OUT Display Driver the first stage of the Shift register through the Output Microelectromechanical Systems Applications Enable logic. Data is shifted through the Shift register on the low-to-high transition of the clock. The HV9308 shifts clockwise, and the HV9408 shifts counter-clockwise 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, 32. Operation of the Shift register is not affected by the latch enable (LE) and the output enable (OE) 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. Package Type 44-lead PLCC (Top view) 6 1 44 40 See Table 2-1 and Table 2-2 for pin information. 2019 Microchip Technology Inc. DS20005912A-page 1HV9308/HV9408 Functional Block Diagram Output Enable V Latch Enable PP DATA INPUT HV 1 OUT CLOCK HV 2 OUT 32 bit Static Shift 32 Latches 32 Outputs Total Register HV 31 OUT DATA OUT HV 32 OUT DS20005912A-page 2 2019 Microchip Technology Inc.