Patent ID: 6608519
Filing Date: 2003-08-19
Classification: H03K

Abstract:
An output circuit, comprising:an input terminal; an output terminal; a plurality of buffer circuits including inputs coupled to said input terminal; a plurality of output drivers, each output driver including; a control terminal coupled to an output of a corresponding one of said buffer circuits, a second terminal coupled to said supply output through a supply line, a third terminal coupled to said output terminal, and wherein said plurality of output drivers selectively couple said supply output to said output terminal under control of said plurality of buffer circuits; and a plurality of sensing and control circuits, each sensing and control circuit coupled to said supply output and to a corresponding one of at least a portion of said plurality of output drivers, each sensing and control circuit including; sensing circuitry that senses voltage changes with respect to time at said supply output, and control circuitry that increasingly disables said at least a portion of said plurality of output drivers with increasing voltage changes with respect to time at said supply output.