Fuse circuit and electronic circuit

Details Fuse circuit and electronic circuit Fuse circuit and electronic circuit

2007-08-07

2007-08-07

Auduong, Gene N. (Department: 2827)

Static information storage and retrieval

Read/write circuit

Having fuse element

C365S230060, C365S189050

Reexamination Certificate

active

11355682

ABSTRACT:
A fuse circuit and an electronic circuit for outputting a signal in accordance with the breakage of fuses even when the resistances of the broken fuses differ, reducing leak currents, and lowering power consumption. The fuse circuit includes a plurality of fuse lines, each including a fuse connected to a low-potential ground line and to a high-potential line via a MOS transistor and a constant current source. The fuse lines also each includes an inverter having an input terminal connected between the MOS transistor and constant current source. A reference circuit is connected in parallel to the fuse lines and includes a current source, a transistor, and a resistor connected in series. The transistor of the reference circuit has an input terminal connected to its control terminal and to the control terminal of each MOS transistor.

REFERENCES:
patent: 5731733 (1998-03-01), Denham
patent: 5774404 (1998-06-01), Eto
patent: 6548884 (2003-04-01), Oikawa
patent: 2000-68458 (2000-03-01), None
patent: 2000-200497 (2000-07-01), None

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