Electrical laser fuse hybrid cell

Details Electrical laser fuse hybrid cell Electrical laser fuse hybrid cell

1996-02-01

1998-05-05

Tran, Toan

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Fusible link or intentional destruct circuit

327526, G11C 700, H01H 3776

Patent

active

057480311

ABSTRACT:
A programmable hybrid fuse circuit having a laser fuse and an electrical fuse. The programmable hybrid fuse circuit includes a reference circuit, a current mirror and at programming circuit. The reference circuit generates a reference current mirror. The current mirror generates an output current in response to the reference current. The current mirror has at least one current output which is coupled to a programming circuit to receive the output current. The programming circuit includes a laser fuse and an electrical fuse coupled in a serial order such that either the laser fuse or the electrical fuse is capable of being blown during programming. The programming circuit generates an output signal having a first voltage level or a second voltage level dependent on whether one of the fuses is blown during programming.

REFERENCES:
patent: 4686384 (1987-08-01), Harvey et al.
patent: 5151611 (1992-09-01), Rippey
patent: 5508638 (1996-04-01), Cowles et al.
patent: 5548555 (1996-08-01), Lee et al.
patent: 5566107 (1996-10-01), Gilliam

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