SCHIMITT TRIGGER CIRCUIT WITH MULTI-INPUT VOLTAGE LEVEL

摘要

The present invention relates to a schumidt trigger circuit with a multiple input voltage level that is applicable to a VLSI system. This circuit includes an input node receiving an input voltage; a connection node to which a "high" or "low" level voltage is applied in response to the input node's voltage level; a logic "high" input voltage control circuit with plural logic "high" input voltage unit control circuits interposed between a first power supply and the connection node; and a logic "low" input voltage control circuit having plural logic "low" input voltage unit control circuits. This circuit does not need extra circuit to match the input voltage's level.