Interface circuit
First Claim
1. An interface circuit comprising:
- a first input terminal;
a second input terminal;
a first output transistor;
a second output transistor;
a first output controller for implementing control according to a voltage supplied to the first and the second input terminals so that a first predetermined current appears at a control terminal of the first output transistor if the first output transistor is in a saturated state and supplies a second predetermined current to the control terminal of the first output transistor if the first output transistor is in a shutoff state; and
a second output controller for implementing control according to a voltage supplied to the first and the second input terminals so that a third predetermined current appears at a control terminal of the second output transistor if the second output transistor is in a saturated state and supplies a fourth predetermined current to the control terminal of the second output transistor if the second output transistor is in a shutoff state.
4 Assignments
0 Petitions
Accused Products
Abstract
An interface circuit includes a first and a second input terminal, a first output transistor, a second output transistor, a first output controller for implementing control according to a voltage supplied to the first and the second input terminal so that a predetermined current appears at a control terminal of the first output transistor if the first output transistor is in saturated state and supplies a predetermined current to the control terminal of the first output transistor if the first output transistor is in shutoff state, and a second output controller for implementing control according to a voltage supplied to the first and the second input terminal so that a predetermined current appears at a control terminal of the second output transistor if the second output transistor is in saturated state and supplies a predetermined current to the control terminal of the second output transistor if the second output transistor is in shutoff state.
4 Citations
20 Claims
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1. An interface circuit comprising:
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a first input terminal; a second input terminal; a first output transistor; a second output transistor; a first output controller for implementing control according to a voltage supplied to the first and the second input terminals so that a first predetermined current appears at a control terminal of the first output transistor if the first output transistor is in a saturated state and supplies a second predetermined current to the control terminal of the first output transistor if the first output transistor is in a shutoff state; and a second output controller for implementing control according to a voltage supplied to the first and the second input terminals so that a third predetermined current appears at a control terminal of the second output transistor if the second output transistor is in a saturated state and supplies a fourth predetermined current to the control terminal of the second output transistor if the second output transistor is in a shutoff state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A level conversion circuit, comprising:
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a first input bipolar transistor receiving a first input signal; a second input bipolar transistor receiving a second input signal; a first output bipolar transistor being driven in phase with said first input bipolar transistor; a second output bipolar transistor being driven in phase with said second input bipolar transistor; and a first output controller that provides a stable drive current to a base of said first output bipolar transistor when said first input bipolar transistor is in a shutoff state. - View Dependent Claims (17, 18, 19, 20)
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Specification