Patent ID: 6803632
Filing Date: 2004-10-12
Classification: H01L

Abstract:
A semiconductor circuit comprising:an output circuit connected to a first power supplying terminal and a reference terminal for outputting an output signal, the output circuit having a plurality of first transistors serially connected between the first power supplying terminal and the reference terminal; an input circuit connected to a second power supplying terminal and the reference terminal for receiving the output signal, the input circuit having a plurality of second transistors serially connected between the second power supplying terminal and the reference terminal, one of the second transistors having a gate for receiving the output signal; and an input protection circuit connected to the output circuit and the input circuit; wherein each of the first and second transistors has a gate, a source having a first low resistance region around a first contact formed thereon so that a first high resistance region is located between the gate and the first low resistance region, and a drain having a second low resistance region around a second contact formed thereon so that a second high resistance region is located between the gate and the second low resistance region.