Patent ID: 9678524
Date: 2017-06-13
CPC Classifications: G05F,H03K

Claim:
1. An apparatus, comprising: a power regulator circuit configured to receive a first voltage and to generate a second voltage using the first voltage, wherein the second voltage is less than the first voltage, wherein the power regulator circuit is further configured to generate a third voltage equal to the second voltage subtracted from the first voltage using current mirroring; and an output buffer configured to provide an output signal based on an input signal, wherein a voltage of the output signal varies between the first voltage and a reference voltage provided by a reference source, wherein a first transistor of the output buffer is configured to be driven using the first voltage or the third voltage based on the input data and a second transistor of the output buffer is configured to be driven using one of the second voltage or the reference voltage based on the input data.