Patent ID: 6084458
Filing Date: 2000-07-04
Classification: H03K

Abstract:
A bidirectional transistor structure having a first I/O port and a second I/O port which are interchangeable for I/O connection, said bi-directional transistor structure consisting of:a first diode element whose negative end is connected to the first I/O port and whose positive end is connected to a first node;a first MOS transistor element of a first conductivity whose first source/drain electrode is connected to the first node connected to the positive end of said first diode element, whose second source/drain electrode is connected to the second I/O port and whose gate is connected to a second node;a second diode element whose negative end is connected to the second I/O port and whose positive end is connected to a third node; anda second MOS transistor element of a first conductivity whose first source/drain electrode is connected to the first I/O port, whose second source/drain electrode is connected to the third node connected to the positive end of said second diode element and whose gate is connected to the second node connected to the gate of said first MOS transistor element, wherein the first MOS transistor is located in position between the positive end of the first diode element and the negative end of the second diode element, and the second MOS transistor is located in position between the negative end of the first diode element and the positive end of the second diode element.