Patent ID: 6166451
Filing Date: 2000-12-26
Classification: B60R,H02H,Y10S

Abstract:
An interface circuit having first and second inputs and first and second outputs, comprising:a first switching circuit (70) having a first conduction terminal coupled to the first input, a second conduction terminal coupled to the first output; a control input coupled to the second input through a current limiting circuit, and an over-voltage protection circuit coupled between the control input and the second conduction terminal; anda second switching circuit (90) having a first conduction terminal coupled to the second input, a second conduction terminal coupled to the second output, a control input coupled to the first input through a current limiting circuit, and an over-voltage protection circuit coupled between the control input and the second conduction terminal,wherein the second conduction terminal of the first switching circuit couples with a power supply terminal for receiving a positive potential, andwherein when the first input receives a positive signal with respect to the second input, the first output is coupled with the power supply terminal, andwherein when the second input receives a positive signal with respect to the first input, the first output is coupled with the power supply terminal.