LOW VOLTAGE OUTPUT BUFFER AND METHOD FOR BUFFERING DIGITAL OUTPUT DATA

摘要

Method and apparatus are provided for buffering a data signal to a low voltage logic device. A circuit (10) for buffering the data signal to the low voltage logic device includes an output buffer (12) having first and second inputs and an output and at least one N-type isolation transistor (1 3, 19) having a source coupled to one or both of the second input and the output. The first input receives the data signal, the second input receives a supply potential, and the output couples to the low voltage logic device. The isolation transistor (13, 19) has a drain for receiving a first potential and is configured to supply a second potential to the output buffer when the gate receives a bias potential. The second potential based on the first potential. The bias potential is greater than the supply potential.