Multiplexing circuit, output stage, and semiconductor device
AssigneeTaiwan Semiconductor Manufacturing Company, Ltd.
InventorCHIN HUA WEN
Life of this patent
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Abstract
A multiplexing circuit includes an output terminal, a first type transistor, a second type transistor and an impedance circuit. The output terminal is arranged to output a serial output signal. The first type transistor is coupled between a first reference voltage and the output terminal. The second type transistor is coupled between a second reference voltage and the output terminal, wherein the first type is different from the second type. The impedance circuit is arranged to provide an impedance between a gate terminal of the first type transistor and the output terminal.
Claims21
A multiplexing circuit, comprising:
- an output terminal, arranged to output a serial output signal;
- a first type transistor, coupled between a first reference voltage and the output terminal, wherein a gate terminal of the first type transistor is configured to receive a control signal and free from receiving a clock signal;
- a second type transistor, coupled between a second reference voltage and the output terminal, wherein a gate terminal of the second type transistor is configured to receive a clock signal, and the first type transistor is different from the second type transistor;
- and
- an impedance circuit, arranged to provide an impedance between the gate terminal of the first type transistor and the output terminal, wherein the impedance circuit is free from connecting to h gate terminal of the second type transistor.
An output stage of a semiconductor device, coupled to an output port of the semiconductor device for receiving a transmission line and comprising:
- a multiplexing circuit, comprising:
- an output terminal, arranged to output a serial output signal;
- a first type transistor, coupled between a first reference voltage and the output terminal;
- a second type transistor, coupled between a second reference voltage and the output terminal, wherein the first type transistor is different from the second type transistor;
- and
- an impedance circuit, arranged to provide an impedance between a gate terminal of the first type transistor and the output terminal;
- an input circuit including a first input terminal, a second input terminal and a sub-output terminal, the first input terminal and the second input terminal are arranged to respectively receive a first clock signal and a second clock signal, and the sub-output terminal is connected to a gate terminal of the second type transistor;
- and
- a driving circuit, coupled between the output terminal and the output port.
(canceled)
A semiconductor device, comprising:
- an output stage, including:
- a multiplexing circuit, including:
- an output terminal, arranged to output an serial output signal;
- a first type transistor, coupled between a first reference voltage and an output terminal;
- a second type transistor, coupled between a second reference voltage and the output terminal, wherein the first type transistor is different from the second type transistor;
- and
- an impedance circuit, arranged to provide an impedance between a gate terminal of the first type transistor and the output terminal;
- an input circuit including a first input terminal, a second input terminal and a sub-output terminal, the first input terminal and the second input terminal are arranged to respectively receive a first clock signal and a second clock signal, and the sub-output terminal is connected to a gate terminal of the second type transistor;
- and
- a driving circuit, coupled to the output terminal;
- and
- an output port, coupled to the driving circuit and configured to receive a transmission line.
Dependencies are inferred from the claim text.