US 2026/0066903 A1Published application

Level shifter

AssigneeTexas Instruments Incorporated

InventorAlex WU

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Abstract

In some examples, an apparatus includes a first level shifter circuit having first, second, third, and fourth inputs. The apparatus also includes a second level shifter circuit having first and second inputs, and first and second outputs. The first input of the second level shifter circuit is coupled to the first input of the first level shifter circuit. The second input of the second level shifter circuit is coupled to the second input of the first level shifter circuit. The first output of the second level shifter circuit is coupled to the third input of the first level shifter circuit. The second output of the second level shifter circuit coupled to the fourth input of the first level shifter circuit.

Claims20

Dependent claims

An apparatus, comprising:

a first transistor having a control terminal and first and second terminals, the first terminal of the first transistor coupled to a first voltage terminal;
a voltage source having first and second terminals, the first terminal of the voltage source coupled to the first voltage terminal
a second transistor having a control terminal and first and second terminals, the first terminal of the second transistor coupled to the second terminal of the first transistor, and the control terminal of the second transistor coupled to the second terminal of the voltage source;
a third transistor having a control terminal and first and second terminals, the first terminal of the third transistor coupled to the second terminal of the second transistor;
a first capacitor having first and second terminals, the first terminal of the first capacitor coupled to the control terminal of the first transistor, the second terminal of the first capacitor coupled to the control terminal of the third transistor;
and
a level shifter circuit having first and second inputs, and a first output, the first input of the level shifter circuit coupled to the second terminal of the third transistor, the second input of the level shifter circuit coupled to the control terminal of the third transistor, and the first output of the level shifter circuit coupled to the control terminal of the first transistor.

4 more elements

An apparatus, comprising:

a first level shifter circuit having first, second, third, and fourth inputs;
and
a second level shifter circuit having first and second inputs, and first and second outputs, the first input of the second level shifter circuit coupled to the first input of the first level shifter circuit, the second input of the second level shifter circuit coupled to the second input of the first level shifter circuit, the first output of the second level shifter circuit coupled to the third input of the first level shifter circuit, and the second output of the second level shifter circuit coupled to the fourth input of the first level shifter circuit.

A system, comprising:

a first circuit having first and second outputs, the first circuit configured to operate in a first voltage domain;
a second circuit having an input, the second circuit configured to operate in a second voltage domain;
a level shifter circuit having first, second, third, and fourth inputs, and an output, the first input of the level shifter circuit coupled to the first output of the first circuit, the second input of the level shifter circuit coupled to the second output of the first circuit, and the output of the level shifter circuit coupled to the input of the second circuit, wherein the level shifter is configured to convert a signal received from the first circuit from the first voltage domain to the second voltage domain;
and
a driver circuit having first and second inputs, and first and second outputs, the first input of the driver circuit coupled to the first input of the level shifter circuit, the second input of the driver circuit coupled to the second input of the level shifter circuit, the first output of the driver circuit coupled to the third input of the level shifter circuit, and the second output of the driver circuit coupled to the fourth input of the level shifter circuit, wherein the driver circuit is configured to drive the level shifter circuit in converting the signal from the first voltage domain to the second voltage domain.

2 more elements

Dependencies are inferred from the claim text.