Semiconductor integrated circuit
AssigneeSeiko Epson Corporation
InventorAkira Maruyama
Life of this patent
Estimating the term…
Abstract
The gate terminals of several Pch transistors are connected to an output terminal and controlled with second and third potentials. The gate terminals of several Nch transistors are connected to the output terminal and controlled with first and fourth potentials. In this way, an input signal between a VDD potential and a GND potential can be level-shifted to an output signal between a VPP potential and a VBB potential with a simple circuit structure. Also, the operation speed in switching potentials can be improved.
Claims6
A semiconductor integrated circuit that converts input signals composed of first and second power supply potentials to output signals composed of third and fourth power supply potentials, the semiconductor integrated circuit comprising:
- first, second and third Pch transistors and first, second and third Nch transistors, wherein:
- a first terminal of the first Pch transistor connects to the third power supply potential;
- a first terminal of the second Pch transistor connects to the third power supply potential;
- a first terminal of the third Pch transistor connects to the first power supply potential;
- a first terminal of the first Nch transistor connects to the second power supply potential;
- a first terminal of the second Nch transistor connects to the fourth power supply potential;
- a first terminal of the third Nch transistor connects to the fourth power supply potential;
- a second terminal of the first Pch transistor connects to a second terminal of the first Nch transistor;
- a second terminal of the second Pch transistor connects to a second terminal of the second Nch transistor;
- a second terminal of the third Pch transistor connects to a second terminal of the third Nch transistor;
- a gate terminal of the first Pch transistor connects to the second terminal of the second Pch transistor;
- a gate terminal of the second Pch transistor connects to the second terminal of the first Pch transistor;
- a gate terminal of the third Pch transistor connects to an input terminal;
- a gate terminal of the first Nch transistor connects to the input terminal;
- a gate terminal of the second Nch transistor connects to the second terminal of the third Pch transistor;
- a gate terminal of the third Nch transistor connects to the second terminal of the second Pch transistor;
- and
- the second terminal of the second Pch transistor is an output terminal.
A semiconductor integrated circuit comprising:
- first, second, and third Pch transistors and first, second, and third Nch transistors, wherein:
- sources of the first and second Pch transistors are connected to a VPP potential;
- a source of the third Pch transistor is connected to a VDD potential;
- a source of the first Nch transistor is connected to a GND potential;
- sources of the second and third transistors are connected to a VBB potential;
- a second terminal of the first Pch transistor connects to a second terminal of the first Nch transistor;
- a second terminal of the second Pch transistor connects to a second terminal of the second Nch transistor;
- a second terminal of the third Pch transistor connects to a second terminal of the third Nch transistor;
- a gate terminal of the first Pch transistor connects to the second terminal of the second Pch transistor;
- a gate terminal of the second Pch transistor connects to the second terminal of the first Pch transistor;
- a gate terminal of the third Pch transistor connects to an input terminal;
- a gate terminal of the first Nch transistor connects to the input terminal;
- a gate terminal of the second Nch transistor connects to the second terminal of the third Pch transistor;
- a gate terminal of the third Nch transistor connects to the second terminal of the second Pch transistor;
- and
- the second terminal of the second Pch transistor is an output terminal.
Dependencies are inferred from the claim text.