Wide voltage range level shifter with symmetrical switching

Details Wide voltage range level shifter with symmetrical switching Wide voltage range level shifter with symmetrical switching

2009-09-25

2010-12-21

Tran, Anh Q (Department: 2819)

Electronic digital logic circuitry

Interface

Supply voltage level shifting

C326S063000, C326S068000, C326S081000

Reexamination Certificate

active

07855575

ABSTRACT:
Described herein is the method and apparatus for generating symmetrical level shifted signals by a symmetrical level shifter. The symmetrical level shifter comprises an edge detector operable to generate transition edge based pulses from an input signal based on a first power supply level; a voltage level shifter, coupled with the edge detector, operable to convert the transition edge based pulses based on the first power supply level to edge based pulses based on a second power supply level; and a divider circuit, coupled with the voltage level shifter, operable to generate an output signal from the edge based pulses based on the second power supply level.

REFERENCES:
patent: 5680064 (1997-10-01), Masaki et al.
patent: 6563357 (2003-05-01), Hsu et al.
patent: 7132856 (2006-11-01), Hsu et al.
patent: 7352209 (2008-04-01), Hsu et al.
patent: 2004/0212021 (2004-10-01), Shimizu

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