Multivalued logic circuit
AssigneeVirtual Pro, Inc.
InventorViktor Viktorovich Olexenko
Life of this patent
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Abstract
In a bridge adder circuit, a first and a second complementary pair of current mirrors is connected between the input terminals and a positive and a negative supply voltage bus, respectively, to control a first and a second push-pull output stage. The outputs of the push-pull output stages are connected to the respective inputs through first resistors and to a common output node through second resistors. As a result, a universal circuit element for a multivalued logic element, such as ternary logic or 5-valued logic is provided.
Claims16
1-7. (canceled)
An adder circuit, comprising
- a first input terminal, a second input terminal, and an output terminal,
- a first supply voltage line and a second supply voltage line,
- a first complementary pair of first and second output transistors operationally connected between the first and second supply voltage lines,
- a second complementary pair of third and fourth output transistors operationally connected between the first and second supply voltage lines,
- a first complementary pair of current mirrors operationally connected between to the input terminals and the first supply voltage line to provide control signals for control electrodes of the first output transistor and the third output transistor,
- a second complementary pair of current mirrors operationally connected between to the input terminals and the second supply voltage line to provide control signals for control electrodes of the second output transistor and the fourth output transistor, and
- at least one first resistive device operationally connected between a first intermediate node in the first complementary output transistor pair and the output terminal, and at least one second resistive device operationally connected between a second intermediate node in the second complementary output transistor pair and the output terminal.
An integrated circuit comprising one or more adder circuits, at least one of said one or more adder circuits further comprising
- a first input terminal, a second input terminal, and an output terminal,
- a first supply voltage line and a second supply voltage line,
- a first complementary pair of first and second output transistors operationally connected between the first and second supply voltage lines,
- a second complementary pair of third and fourth output transistors operationally connected between the first and second supply voltage lines,
- a first complementary pair of current mirrors operationally connected between to the input terminals and the first supply voltage line to provide control signals for control electrodes of the first output transistor and the third output transistor,
- a second complementary pair of current mirrors operationally connected between to the input terminals and the second supply voltage line to provide control signals for control electrodes of the second output transistor and the fourth output transistor, and
- at least one first resistive device operationally connected between a first intermediate node in the first complementary output transistor pair and the output terminal, and at least one second resistive device operationally connected between a second intermediate node in the second complementary output transistor pair and the output terminal
Dependencies are inferred from the claim text.