Patent ID: 7046036
Filing Date: 2006-05-16
Classification: H03K

Abstract:
1. An output buffer with low-voltage devices to driver high-voltage signals, comprising: a tri-state control circuit, capable of receiving and processing external low-voltage signals and high-voltage signals and outputting at least two resulting signals; a level converter, connected to the tri-state control circuit by one end thereof, for receiving the resulting signals so as to convert low voltage swing to high-voltage swing; an output end module, consisting of a plurality of serial-connected metal-oxide semiconductor field effect transistors; a first taper buffer, having one end connecting to the level converter and another end thereof connecting to the output end module; and a second taper buffer, having one end connecting to the tri-state control circuit and another end thereof connecting to the output end module, wherein the plurality of serial-connected metal-oxide semiconductor field effect transistors include at least a native Vt NMOS transistor.