The HV574 is a low-voltage serial to high-voltage parallel con-verter with push-pull outputs. This device has been designed for use as a driver for printer applications. It can also be used in any application requiring multiple output high-voltage current sour-cing and sinking capability such as driving plasma panels, vacuum fluorescent displays, or large matrix LCD displays. The device has 4 parallel 20-bit dynamic shift registers, permitting data rates 4X the speed of one (they are clocked together). The