Level shifter

Details Level shifter Level shifter

2006-07-11

2006-07-11

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Interface

Logic level shifting

C326S026000, C326S027000, C326S063000, C326S082000, C326S083000, C326S086000

Reexamination Certificate

active

07075335

ABSTRACT:
A first and a second semiconductor switching elements are provided in parallel between a first supply voltage and a second negative reference voltage to become conductive based on an input signal. A first and a second high breakdown voltage semiconductor switching elements are provided in serial to the first and second semiconductor switching elements and kept normally conductive. A first current source circuit supplies a first current to the first and second semiconductor switching elements. A second current source circuit is connected in parallel with the first current source to supply a second current only for a certain period of time.

REFERENCES:
patent: 5502412 (1996-03-01), Choi et al.
patent: 6060904 (2000-05-01), Shimoda
patent: 6433582 (2002-08-01), Hirano
patent: 6727728 (2004-04-01), Bitting

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