Voltage switching circuit

Details Voltage switching circuit Voltage switching circuit

2006-11-07

2006-11-07

Ton, My-Trang Nu (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Superconductive device

C327S389000

Reexamination Certificate

active

07132875

ABSTRACT:
A voltage switching circuit is disclosed which is constructed from a minimum number of transistors and prevents the threshold voltage margin from being lowered by causing high-voltage cutoff and supply voltage transfer functions heretofore performed by a single depletion transistor to be shared between two series-connected depletion transistors different in gate insulating film thickness or threshold voltage. Thus, without using enhancement transistors which involve an increase in pattern area a voltage switching circuit can be provided which is small in chip area, low in cost and high in yield and reliability and provides a stable operation with a low supply voltage which is impossible with one depletion transistor.

REFERENCES:
patent: 4595847 (1986-06-01), Weir
patent: 4716307 (1987-12-01), Aoyama
patent: 5315188 (1994-05-01), Lee
patent: 5541549 (1996-07-01), Kubota
patent: 6215348 (2001-04-01), Steensgaard-Madsen
patent: 6307420 (2001-10-01), Zhou
patent: 5-259473 (1993-10-01), None
patent: 3242149 (2001-10-01), None

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