Patent ID: 7271643
Filing Date: 2007-09-18
Classification: H01L

Abstract:
1. An electrically blowable fuse circuit comprising: a fuse which may be placed in a condition to be blown; a first transistor having a body, a source, a drain, and a gate, said drain connected to one end of said fuse and said source connected to ground, said first transistor including a controllable parasitic device in said body; a second transistor connected to said parasitic device such that when said second transistor is turned on, said parasitic device turns on said first transistor, allowing said fuse to be blown when said fuse is placed in a condition to be blown; and a transmission gate connected between the gate of said first transistor and ground such that the gate of said first transistor is floating when attempting to blow said fuse, and grounded when not attempting to blow said fuse.