ELECTROSTATIC DISCHARGE PROTECTION CIRCUIT AND PROTECTED DEVICE, AND A PROTECTION METHOD

摘要

An ESD protection circuit has an SCR provided between first and second voltage supply terminals. A transistor circuit controls the triggering of the SCR, and is adapted to turn the SCR on in response to a voltage surge on the first voltage supply terminal. An RC control circuit is adapted to control the transistor circuit to turn the SCR off after a delay following the voltage surge.