SEMICONDUCTOR INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To prevent electrostatic breakdown of an IC capable of input and output operation in a plurality of frequency ranges from a low frequency band to a high frequency band. SOLUTION: A high frequency section of the IC is equipped with a protection circuit which comprises a multistage connection of diode connection transistors. Furthermore, the transistors which are each independently separated with insulating material capable of preventing thyristor operation are employed for the protection circuit. COPYRIGHT: (C)2008,JPO&INPIT