HV3527

(Not recommended for new designs. Please use HV507 with improved performance.)

The HV35 is a low voltage serial to high voltage parallel converter with 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, D_IOA is Data-In and D_IOB is Data-Out; data is shifted from HV_OUT64 to HV_OUT1. When DIR is at logic high, DIOB is Data-In and DIOA is Data-Out: data is then shifted from HV_OUT1 to HV_OUT64. 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 (latch enable) is high. The data in the latch is stored during LE transition from high to low.

A bias pin is used to ensure that the device operates at full V_PP voltage.