US Patent Issued to SK keyfoundry on Oct. 14 for "Bidirectional I/O circuit and integrated circuit including bidirectional I/O circuit" (South Korean Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,131, issued on Oct. 14, was assigned to SK keyfoundry Inc. (Cheongju-si, South Korea).

"Bidirectional I/O circuit and integrated circuit including bidirectional I/O circuit" was invented by Wanchul Kong (Gwangju-si, South Korea) and Jungho Kim (Seoul, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bidirectional I/O circuit includes an output post driver configured to control an output signal of a bidirectional pad during a normal mode, a floating N-well network configured to apply a VDD-level bias to the output post driver based on an input signal of the bidirectional pad during a power down mode, and a post driver control circuit conf...