Voltage switching circuit

Details Voltage switching circuit Voltage switching circuit

2006-09-29

2008-08-19

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Gating

Superconductive device

C327S389000

Reexamination Certificate

active

07414454

ABSTRACT:
A voltage switching circuit is provided 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.

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Korean Office Action mailed Jan. 29, 2004, KR Appln. 10-2001-0066692, including English translation.
JP Office Action mailed Apr. 24, 2007, JP Appln. 2001-308693.
JP Decision of Patent Grant dtd May 13, 2008, JP App. 2001-308693.

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