Patent ID: 7660090

Claim:
A circuit for transient voltage protection, comprising: an input transistor having at least a gate, a drain, and a source, wherein source of the input transistor is coupled to an input node, and wherein the drain of the input transistor is coupled to a protected input node; a voltage divider having at least: an input that is coupled to the input node, and an output; and a low-voltage reset circuit having at least an input that is coupled to the output of the voltage divider, wherein the low-voltage reset circuit is arranged to cause the gate of the input transistor and the source of the input transistor to short together if the low-voltage reset circuit is not in a reset state, wherein the low-voltage reset circuit is arranged to provide an output signal; the low-voltage reset circuit is in a reset state when a voltage at the input of the low-voltage reset circuit is below a pre-determined value, as adjusted by hysteresis; and wherein the low-voltage reset circuit is arranged to leave the reset state when the voltage at the input of the low-voltage reset circuit is above the pre-determined value, as adjusted by hysteresis.