Patent ID: 6759868
Filing Date: 2004-07-06
Classification: H03K

Abstract:
An output driver for driving a signal, the output driver comprising:a first driver configured with an input and an output, the first driver having an output impedance selected to match a characteristic impedance of a signal transmission media and an input impedance selected to match at least one receiver; and a second driver electrically coupled in parallel with the first driver, the second driver configured to receive and amplify a signal applied at the input in response to a control signal such that the second driver is turned on in response to a transition of the signal at the input, the second driver remaining on for a portion of the time that the signal applied at input maintains a logic threshold, wherein the second driver modifies the output impedance of the output driver in response to the control signal, the second driver being configured to turn off at a predetermined time in response to the control signal.