Patent ID: 9099330
Filing Date: 2015-08-04
Classification: H01L,H03K

Abstract:
1. A semiconductor chip comprising: an output circuit including a first transistor and a second transistor, being interconnected in series and turned on or off complementarily, said output circuit outputting a signal to a first external terminal; and a first power supply voltage supply source, and an internal circuit outputting a signal to said output circuit; a third transistor connected in series with said first transistor and having a gate terminal connected to a second external terminal which is connected to a power supply of an external circuit, wherein said third transistor is connected between said first supply voltage source and said first transistor; said third transistor having one terminal connected to said first power supply voltage source; said internal circuit comprising: wherein both said first and second internal circuits operating by a voltage supplied from said first power supply voltage supply source, wherein the threshold value of said third transistor is substantially 0V.