Voltage switching circuit and semiconductor memory device having the same
AssigneeSK hynix Inc.
InventorSeung Wan CHAE
Life of this patent
Estimating the term…
Abstract
A voltage switching circuit selectively transfers voltages applied to a first input terminal and a second input terminal to a first output terminal and a second output terminal. The voltage switching circuit includes a first transistor and a second transistor. The first transistor is formed on a first well on a substrate, and is coupled between the first input terminal and the first output terminal. The second transistor is formed on a second well different from the first well, and is coupled to the second input terminal. In a first mode in which a first voltage applied to the first input terminal is transferred to the first output terminal and the second output terminal, the first transistor is turned on and the second transistor is turned off.
Claims20
A voltage switching circuit for selectively transferring voltages applied to a first input terminal and a second input terminal to a first output terminal and a second output terminal, the voltage switching circuit comprising:
- a first transistor formed on a first well on a substrate, the first transistor being coupled between the first input terminal and the first output terminal;
- and
- a second transistor formed on a second well different from the first well, the second transistor being coupled to the second input terminal,
- wherein, in a first mode in which a first voltage applied to the first input terminal is transferred to the first output terminal and the second output terminal, the first transistor is turned on and the second transistor is turned off.
A voltage switching circuit for selectively transferring voltages applied to a first input terminal and a second input terminal to a first output terminal and a second output terminal, the voltage switching circuit comprising:
- a first switching circuit configured to selectively transfer a first voltage applied to the first input terminal to the second output terminal;
- and
- a second switching circuit configured to selectively transfer a second voltage applied to the second input terminal to the second output terminal,
- wherein the first voltage is transferred to the first output terminal, and
- wherein at least one transistor included in the first switching circuit is formed on a well different from that on which at least one transistor included in the second switching circuit is formed.
A switching circuit comprising:
- a first transistor configured to transfer a first voltage from a first input node to a first output node;
- second and third transistors configured to transfer, when turned on, a second voltage from a second input node to a second output node;
- and
- a fourth transistor configured to transfer, when turned on, the first voltage to the second output node,
- wherein the second transistor is formed on a different well from the first, third and fourth transistors, and
- wherein the first and second voltages have different polarities.
Dependencies are inferred from the claim text.