High-to-low level shifter

Details High-to-low level shifter High-to-low level shifter

2005-09-06

2005-09-06

Zweizig, Jeffrey (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S080000

Reexamination Certificate

active

06940333

ABSTRACT:
A high-to-low level shifter, coupled to a first external signal, for transforming the first external signal into an internal signal, wherein the first external signal substantially switches between a high-voltage-domain high potential and a high-voltage-domain low potential, the internal signal substantially switches between a low-voltage-domain high potential and a low-voltage-domain low potential. The high-to-low level shifter includes: an inverter, for generating a second external signal according to the first external signal, wherein the second external signal is inverse to the first external signal; and a level shifter, for generating the internal signal according to the first external signal and the second external signal.

REFERENCES:
patent: 5382846 (1995-01-01), Shigehara et al.
patent: 5399920 (1995-03-01), Van Tran
patent: 5952847 (1999-09-01), Plants et al.
patent: 6252422 (2001-06-01), Patel et al.
patent: 6426658 (2002-07-01), Mueller et al.

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