Patent ID: 6812733
Filing Date: 2004-11-02
Classification: H03K,H04L

Abstract:
A mixed voltage/current mode output driver circuit comprising:a series terminated voltage mode driver circuit connected in parallel with a current mode driver circuit between a voltage source and ground, the outputs of said voltage and current mode driver circuits being connected in parallel and to a transmission line, the voltage mode driver circuit comprising: a pair of inverter circuits; a resistor divider circuit coupled between the pair of inverter circuits, the resistor divider circuit being divided into a first section, a second section, and a third section and having a pair of ends, each section being between the pair of ends, wherein a first input is coupled to a first one of the pair of inverter circuits; a second input is coupled to a second one of the pair of inverter circuits; the output is coupled to a first node between the first and second sections of the resistor divider circuit; a binary value applied to the first input is the same as a binary value received at the first output; and a binary value applied to the second input is the same as a binary value received at the second output.