Patent ID: 6275367
Filing Date: 2001-08-14
Classification: H01L

Abstract:
A semiconductor circuit device comprising:first and second terminals;a protection circuit including:a common wiring pattern;a first protection element connected between said first terminal and said common wiring pattern, and including a first clamp circuit which has a first clamp voltage lower than a threshold voltage of an internal circuit when a positive voltage with respect to said second terminal is applied to said first terminal.a second protection element connected between said second terminal and said common wiring pattern, and including a second clamp circuit which has a second clamp voltage lower than the threshold voltage of said internal circuit when a positive voltage with respect to said first terminal is applied to said second terminal; anda MIS transistor connected between said first and second terminals in parallel with said internal circuit, a gate of said MIS transistor connected to one of a source or drain of said MIS transistor.