Patent Number: 6,310,493

Title: Semiconductor integrated circuit

Abstract: In a semiconductor integrated circuit, an input-output circuit includes aflip-flop circuit (a front stage of an output circuit) between an inputcircuit unit and a tri-state output circuit unit (a final stage of anoutput circuit). This input-output circuit converts the level of thesignal supplied from an internal circuit, which is operated by a firstpower source system, which provides a first supply potential and agrounding potential, of an LSI. After elapse of a certain time delay, theinput-output circuit outputs a level converted signal to a device, whichis operated by a second power source system, providing a second supplypotential and a grounding potential, outside of the LSI.

Inventors: Taniguchi; Hideki (Tokyo, JP)


International Classification:

Expiration Date: 10/32013