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US 9,806,717 B2Granted
High-speed level-shifting multiplexer
AssigneeQUALCOMM Incorporated
InventorsKevin Robert Bowles, Jose Gabriel Corona, Venugopal Boynapalli
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Abstract
Systems and methods for level-shifting multiplexing are described herein. In one embodiment, a method for level-shifting multiplexing comprises selecting one of a plurality of inputs based on one or more select signals, and pulling down one of first and second nodes based on a logic state of the selected one of the plurality of inputs. The method also comprises pulling up the first node if the second node is pulled down, and pulling up the second node if the first node is pulled down.
Claims7
A multiplexer, comprising:
- a first level-shifting multiplexer configured to select one of a first plurality of inputs based on a first plurality of select signals, to level shift a signal at the selected one of the first plurality of inputs, and to output the level-shifted signal of the first level-shifting multiplexer at a first output;
- a second level-shifting multiplexer configured to select one of a second plurality of inputs based on a second plurality of select signals, to level shift a signal at the selected one of the second plurality of inputs, and to output the level-shifted signal of the second level-shifting multiplexer at a second output;
- a combining circuit configured to combine the first and second outputs;
- and
- a decoder configured to select one of the first and second plurality of inputs based on a pointer by either setting one of the first plurality of select signals to a first state and disabling the second level-shifting multiplexer or setting one of the second plurality of select signals to a second state and disabling the first level-shifting multiplexer, wherein the pointer indicates which signal at the first and second plurality of inputs to output by the multiplexer.
2 more elements
Dependencies are inferred from the claim text.