Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Fusible link or intentional destruct circuit
Patent
1997-06-27
2000-04-25
Wells, Kenneth B.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Fusible link or intentional destruct circuit
365 96, 3652257, H01H 3776, H01H 8500
Patent
active
060548932
ABSTRACT:
A low current differential fuse circuit for adjusting the operating characteristics of semiconductor circuits. A switching circuit is connected between a first and a second fuse. The first and second fuses are respectively connected to a supply potential (e.g., 5.0 volts) and a reference potential (e.g., 0.0 volts). Additionally, each fuse is connected to a circuit for blowing the fuse. The switching circuit is also connected to a bias circuit that biases the switching components (e.g., a PMOS transistor and an NMOS transistor) to ensure that the switching circuit correctly switches in response to a selected fuse (e.g., either the first fuse or the second fuse) being blown (e.g., opened). An inverter circuit may also be provided between a switching node and an output node to provide a desired output potential.
REFERENCES:
patent: 4613959 (1986-09-01), Jiang
patent: 4686384 (1987-08-01), Harvey et al.
patent: 5428311 (1995-06-01), McClure
patent: 5566107 (1996-10-01), Gilliam
Institute of Microelectronics
Tra Quan
Wells Kenneth B.
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