Patent ID: 7561137

Claim:
Circuitry comprising a driver for generating a driver output signal presented at a driver output node based on a driver input signal applied at a driver input node, the driver comprising: a first comparator adapted to compare the driver output signal to the driver input signal in order to generate a comparator output signal; a configurable inverter adapted to generate an inverted version of the comparator output signal as an inverter output signal presented at an inverter output node, wherein the configurable inverter is adapted to be selectively configured to provide any one of at least two different inverter logic threshold levels; a first output driving device connected to receive, at its control terminal, a signal based on the inverter output signal, wherein an output node of the first output driving device is connected to the driver output node; and a controller adapted to control the inverter logic threshold level of the configurable inverter to reduce chattering in the driver output signal, wherein the configurable inverter comprises: a series combination of an n-type transistor and a p-type transistor connected to receive the comparator output signal at their gate nodes and connected at channel nodes to the inverter output node; an additional transistor connected at a channel node to the inverter output node and in parallel with one of the transistors in the series combination; and a switch adapted to selectively apply the comparator output signal to the gate of the additional transistor in order to change the logic threshold level of the configurable inverter.