Patent ID: 7888988

Claim:
A fuse circuit, comprising: a first power supply line; a second power supply line; a first transistor coupled between said first and second power supply lines to output a first output current; a second transistor coupled between said first and second power supply lines and coupled to said first transistor to output a second output current; a fuse coupled in series with said first transistor or said second transistor between said first and second power supply line; another fuse coupled to said second power supply line; an output terminal coupled to a node between said first and second transistors to output a signal in accordance with a magnitude relationship of the first output current and the second output current, wherein said magnitude relationship is inverted based on a size ratio of said second transistor and whether said fuse is cut or not; a fuse cutting transistor coupled in series with said fuse between said first and second power supply lines; a switch coupled to said fuse cutting transistor and selectively coupled to one of said fuse and said another fuse; and an additional transistor coupled to a node between said another fuse and said switch.