Conduction line decoupling circuit
AssigneeSTMicroelectronics S.r.l.
InventorMarco Riva
Life of this patent
Estimating the term…
Abstract
A decoupling circuit for decoupling conduction lines from each other, the circuit including at least one pass gate element having conduction terminals connected to the conduction lines and having at least one control terminal. The decoupling circuit includes at least one protection circuit inserted between the control terminal and at least one of the conduction lines, and including at least one protection transistor connected to the control terminal and to the at least one conduction line, and configured to take in a disturbing signal passing through the pass gate element (N1) to properly decouple the conduction lines from each other on the occurrence of a disturbing condition.
Claims20
A decoupling circuit for decoupling conduction lines from each other, the circuit comprising at least one pass gate element having conduction terminals connected to said conduction lines, and having at least one control terminal;
- and at least one protection circuit inserted between said control terminal and at least one of said conduction lines, said protection circuit comprising at least one protection transistor connected to said control terminal and said at least one of said conduction lines and configured to take in a disturbing signal passing through said pass gate element to properly decouple said conduction lines from each other.
A decoupling circuit comprising:
- a conduction transistor having first and second conduction terminals coupled to first and second conduction lines, respectively, and a control terminal coupled to an output of an inverter;
- and
- a protection circuit coupled between the second conduction line and the second conduction terminal and further coupled to the output of the inverter, the protection circuit comprising a pull-up transistor having a first terminal coupled to a voltage source, a second terminal coupled to the second conduction terminal of the decoupling transistor, and a control terminal coupled to the output of the inverter, the pull-up transistor configured to prevent a disturbing signal from passing directly from the first conduction line to the second conduction line.
A decoupling circuit, comprising:
- a decoupling transistor having first and second conduction terminals coupled to first and second conduction lines, respectively, and a control terminal coupled to an output of an inverter;
- and
- a protection circuit having a first terminal coupled to the first conduction line and a second terminal coupled to the output of the inverter, the protection circuit configured to be in an “off” condition when the voltage on the first conduction line is higher than a ground reference potential to permit the decoupling transistor to be driven directly from the inverter, and the protection circuit further configured to have the voltage at the control terminal of the decoupling transistor follow the voltage on the first conduction line when the voltage on the first conduction line falls below the ground reference potential.
A decoupling circuit, comprising:
- a decoupling transistor having first and second conduction terminals coupled to first and second conduction lines, respectively, and a control terminal coupled to an output of an inverter;
- a first protection circuit comprising:
- a protection circuit coupled between the second conduction line and the second conduction terminal of the decoupling transistor and further coupled to the output of the inverter, the protection circuit comprising a pull-up transistor having a first terminal coupled to a voltage source, a second terminal coupled to the second conduction terminal of the decoupling transistor, and a control terminal coupled to the output of the inverter, the pull-up transistor configured to prevent a disturbing signal from passing directly from the first conduction line to the second conduction line;
- a second protection circuit having a first terminal coupled to the first conduction line and a second terminal coupled to the output of the inverter, the protection circuit configured to be in an “off” condition when the voltage on the first conduction line is higher than a ground reference potential to permit the decoupling transistor to be driven directly from the inverter, and the protection circuit further configured to have the voltage at the control terminal of the decoupling transistor follow the voltage on the first conduction line when the voltage on the first conduction line falls below the ground reference potential.
Dependencies are inferred from the claim text.