Level shifter circuit

Details Level shifter circuit Level shifter circuit

2006-08-07

2008-10-14

Le, Don P (Department: 2819)

Electronic digital logic circuitry

Function of and, or, nand, nor, or not

Decoding

C326S068000, C345S100000

Reexamination Certificate

active

07436219

ABSTRACT:
A level shifter circuit includes: K level shifter units for receiving K input signals having a first voltage level range and outputting K output signals having a second voltage level range, wherein the second voltage level range is greater than the first voltage level range. Each level shifter unit is utilized to output an output signal at an output end and includes: a first switch, coupled between the output end and a first voltage source for controlling the electrical connection between the first voltage source and the output end according to an input signal; and (K−1) second switches, connected in parallel between the output end and a second voltage source, for respectively controlling its ON/OFF status according to (K−1) output signals except for the output signal. K is an integer.

REFERENCES:
patent: 7030661 (2006-04-01), Doyle
patent: 7321255 (2008-01-01), Maki
patent: 2004/0227546 (2004-11-01), Nanba et al.

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