Single-supply, single-ended level conversion circuit for an integrated circuit having multiple power supply domains
First Claim
1. A circuit comprising:
- a first transistor having a first current electrode, a control electrode for receiving an input signal, and a second current electrode;
a second transistor having a first current electrode coupled to the second current electrode of the first transistor for providing an output signal, a control electrode coupled to the control electrode of the first transistor for receiving the input signal, and a second current electrode coupled to a first power supply voltage terminal;
an inverter having an input coupled to the second current electrode of the first transistor, and an output; and
a leakage reduction circuit comprising;
a third transistor having a first current electrode coupled to a second power supply voltage terminal, a control electrode coupled to the output of the inverter, and a second current electrode coupled to the first current electrode of the first transistor; and
a fourth transistor having a first current electrode coupled to the control electrode of the third transistor, a control electrode coupled to the control electrodes of the first and second transistors, and a second current electrode coupled to the control electrode of the first transistor.
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Abstract
A circuit comprises first, second, third, and fourth transistors. The first transistor has a first current electrode, a control electrode for receiving an input signal, and a second current electrode. The second transistor has a first current electrode coupled to the second current electrode of the first transistor for providing an output signal, a control electrode coupled to the control electrode of the first transistor, and a second current electrode coupled to a first power supply voltage terminal. The third transistor has a first current electrode coupled to a second power supply voltage terminal, a control electrode, and a second current electrode coupled to the first current electrode of the first transistor. The fourth transistor has a first current electrode coupled to the control electrode of the third transistor, a control electrode coupled to the control electrodes of the first and second transistors, and a second current electrode coupled to the control electrode of the first transistor.
21 Citations
16 Claims
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1. A circuit comprising:
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a first transistor having a first current electrode, a control electrode for receiving an input signal, and a second current electrode; a second transistor having a first current electrode coupled to the second current electrode of the first transistor for providing an output signal, a control electrode coupled to the control electrode of the first transistor for receiving the input signal, and a second current electrode coupled to a first power supply voltage terminal; an inverter having an input coupled to the second current electrode of the first transistor, and an output; and a leakage reduction circuit comprising; a third transistor having a first current electrode coupled to a second power supply voltage terminal, a control electrode coupled to the output of the inverter, and a second current electrode coupled to the first current electrode of the first transistor; and a fourth transistor having a first current electrode coupled to the control electrode of the third transistor, a control electrode coupled to the control electrodes of the first and second transistors, and a second current electrode coupled to the control electrode of the first transistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A circuit comprising:
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a first transistor having a first current electrode, a control electrode for receiving an input signal, and a second current electrode; a second transistor having a first current electrode coupled to the second current electrode of the first transistor for providing an output signal, a control electrode coupled to the control electrode of the first transistor for receiving the input signal, and a second current electrode coupled to a first power supply voltage terminal; and a leakage reduction circuit comprising; a third transistor having a first current electrode coupled to a second power supply voltage terminal, a control electrode, and a second current electrode coupled to the first current electrode of the first transistor; a fourth transistor having a first current electrode coupled to the control electrode of the third transistor, a control electrode coupled to the control electrodes of the first and second transistors, and a second current electrode coupled to the control electrode of the first transistor; and a fifth transistor having a first current electrode coupled to the second power supply voltage terminal, a control electrode connected to the control electrode of the first, second, and fourth transistors, and a second current electrode coupled to the first current electrode of the fourth transistor. - View Dependent Claims (11, 12, 13, 14)
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15. A circuit comprising:
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a first transistor having a first current electrode, a control electrode for receiving an input signal, and a second current electrode, wherein the input signal originates from a portion of an integrated circuit powered by a first power supply voltage; a second transistor having a first current electrode coupled to the second current electrode of the first transistor for providing an output signal, a control electrode coupled to the control electrode of the first transistor for receiving the input signal, and a second current electrode coupled to a ground terminal; and a leakage reduction circuit comprising; a third transistor having a first current electrode coupled to a second power supply voltage terminal, a control electrode, and a second current electrode coupled to the first current electrode of the first transistor, wherein the second power supply voltage terminal is for receiving a second power supply voltage different from the first power supply voltage; a fourth transistor having a first current electrode coupled to the control electrode of the third transistor, a control electrode coupled to the control electrodes of the first and second transistors, and a second current electrode coupled to the control electrode of the first transistor; and a fifth transistor having a first current electrode coupled to the second power supply voltage terminal, a control electrode connected to the control electrode of the first, second, and fourth transistors, and a second current electrode coupled to the first current electrode of the fourth transistor. - View Dependent Claims (16)
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Specification