Patent ID: 7180361

Claim:
An antifuse programming circuit, comprising: an antifuse having a first terminal and a second terminal, the first terminal of the anitfuse connected to receive a programming voltage; a first transistor having a drain and a source and a gate, the drain of the first transistor connected to the second terminal of the antifuse, the source of the first transistor connected to a first power supply, the gate of the first transistor connected to receive a selection signal, the selection signal able to be set to a selection level to indicate that said anitfuse is to be programmed; and a second transistor having a drain and a source and a gate, the drain of the second transistor connected to a second power supply, the source of the second transistor connected to the drain of the first transistor; wherein the second power supply is configured to supply a voltage to the drain of the second transistor that is lower than the programming voltage.