Multiplexer control scheme
AssigneeCypress Semiconductor Corporation
InventorsNathan Y. Moyal, Brian G. Kirkland
Life of this patent
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Abstract
A circuit comprising a plurality of input devices, a plurality of de-select devices and a selector device. The plurality of input devices may each be configured to receive an input signal. The plurality of de-select devices may each be configured to present an output in response (i) one of the plurality of inputs and (ii) one of a plurality of de-select signals. The selector device may be configured to present the plurality of de-select signals. In general, all but one of the de-select signals is active at a time.
Claims20
A circuit comprising:
- a plurality of input devices each configured to receive an input signal, wherein each of said plurality of input devices comprises a differential transistor pair;
- a plurality of de-select devices each configured to present an output signal through at least one resistor in response to (i) one of said plurality of input signals and (ii) one of a plurality of de-select signals, wherein each of said de-select devices is connected to one or more of said input devices and one or more current sources;
- and
- a selector device configured to present said plurality of de-select signals, wherein all but one of said de-select signals is active at a time.
A circuit comprising:
- a plurality of input devices each configured to receive an input signal;
- a plurality of de-select devices each configured to present an output signal through at least one resistor in response to (i) one of said plurality of inputs and (ii) one of a plurality of de-select signals, wherein each of said de-select devices (i) comprises a first transistor, a second transistor and a third transistor connected to a common node and (ii) is connected to one or more of said input devices;
- and
- a selector device configured to present said plurality of de-select signals.
A method of generating an output in response to a plurality of inputs comprising the steps of:
- (a) receiving said plurality of input signals, wherein each of said plurality of input signals is received by a differential transistor pair;
- (b) generating a plurality of de-select signals, wherein all but one of said de-select signals is active at a time;
- and
- (c) generating said output in response (i) one of said plurality of inputs, (ii) one of said plurality of de-select signals and (iii) one or more current sources, wherein said output is presented through at least one resistor.
Dependencies are inferred from the claim text.