Output logic setting circuit in semiconductor integrated circuit

Details Output logic setting circuit in semiconductor integrated circuit Output logic setting circuit in semiconductor integrated circuit

1998-05-13

2000-12-05

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Fusible link or intentional destruct circuit

327198, H01H 8500

Patent

active

061572403

ABSTRACT:
An output logic setting circuit includes a fusible fuse element which is selectively rendered disconnected by external signal operation. The output logic setting circuit is designed to output, from an output terminal, a change in logic output state when the fuse element is rendered disconnected. The output logic setting circuit includes an inverter circuit which is arranged between the fuse element and the output terminal and which has a threshold set to ensure proper circuit operation even if the blown fuse element returns to an apparent connected state over time.

REFERENCES:
patent: 4532607 (1985-07-01), Uchida
patent: 4533841 (1985-08-01), Konishi
patent: 4707806 (1987-11-01), Takemae et al.
patent: 5731733 (1998-03-01), Denham
patent: 5801574 (1998-09-01), Martin et al.

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