US 2004/0000929 A1 · Level shelter, semiconductor integrated circuit and information processing system

Abstract

A level shifter that normally operates with low power consumption at a high operating frequency is provided. The level shifter, including a first level shifter, which has transistors MP3 and MP4, which have a supply voltage VDD applied to respective sources and respective gates connected to the other's drain, and transistors MN3 and MN4, which have signals SIN and SINB applied to respective gates, respective drains connected to the transistors MP3 and MP4 drains, and respective sources grounded; and a second level shifter, which has transistors MN5 and MN6, which have respective sources grounded and respective drains connected to the other's gate, and transistors MP5 and MP6, which have a supply voltage VDD applied to respective sources, signals SIN and SINB applied to respective gates, and respective drains connected to the transistors MP5 and MP6 drains; wherein the drains of the transistors MP3 and MN5 are connected to each other, and the drains of the transistors MP4 and MN6 are connected to each other.

Claims14

Dependent claims

A level shifter, comprising:

a first transistor of a first conduction type, which is connected between a first power supply line and a first node, has a control terminal connected to an input terminal to which an input signal is to be applied;
a second transistor of a second conduction type, which is connected between a second power supply line and the first node, has a control terminal connected to an output terminal;
an inverter, which is connected between the input terminal and a second node;
a third transistor of the first conduction type, which is connected between the first power supply line and the output terminal, has a control terminal connected to the second node;
a fourth transistor of the second conduction type, which is connected between the second power supply line and the output terminal, has a control terminal connected to the first node;
a fifth transistor of the second conduction type, which is connected between the second power supply line and the first node, has a control terminal connected to the input terminal.

3 more elements

A level shifter, comprising:

a first transistor of a first conduction type, which is connected between a first power supply line and a first node, has a control terminal connected to an input terminal to which an input signal is to be applied;
a second transistor of a second conduction type, which is connected between the first node and a second power supply line, has a control terminal connected to an output terminal;
an inverter, which is connected between the input terminal and a second node;
a third transistor of the first conduction type, which is connected between the first power supply line and the output terminal, has a control terminal connected to the second node;
a fourth transistor of the second conduction type, which is connected between the second power supply line and the output terminal, has a control terminal connected to the first node;
and
a fifth transistor of the first conduction type, which is connected between the first power supply line and the first node, has a control terminal connected to the output terminal;
a sixth transistor of the second conduction type, which is connected between the second power supply line and a third node, has a control terminal connected to the input terminal;
a seventh transistor of the first conduction type, which is connected between the first node and the third node, has a control terminal connected to the first node;
an eighth transistor of the first conduction type, which is connected between the first power supply line and the output terminal, has a control terminal connected to the first node;
a ninth transistor of the second conduction type, which is connected between the second power supply line and a fourth node, has a control terminal connected to the second node;
and
a tenth transistor of the first conduction type, which is connected between the fourth node and the output terminal, has a control terminal connected to the output terminal.

10 more elements

Dependencies are inferred from the claim text.

Level shelter, semiconductor integrated circuit and information processing system

Life of this patent

Level shelter, semiconductor integrated circuit and information processing system

Life of this patent

Abstract

Claims14