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US 4,570,084 AGranted
Clocked differential cascode voltage switch logic systems
AssigneeInternational Business Machines Corporation
InventorsWilliam R. Griffin, Lawrence G. Heller
Life of this patent
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Abstract
A differential logic system is provided for a complete logic family which has a first switching circuit that produces a given output signal at a first output node and a second switching circuit that produces a second output signal which is the complement of that of the given output signal at a second output node. First and second clocked devices are connected from the first and second output nodes, respectively, to a voltage source, and first and second inverters are connected to the first and second output nodes, respectively. Additionally, a regenerative circuit may be connected between the first and second output nodes and the voltage source.
Claims22
A differential logic system comprising
- a first switching circuit including input terminals and a first output terminal having a given signal,
- a second switching circuit including input terminals and a second output terminal having a signal complementary to that of said first output terminal,
- a voltage source,
- a first clocked device connected between said voltage source and said first output terminal,
- a second clocked device connected between said voltage source and said second output terminal,
- a first inverter circuit having an input terminal connected to said first output terminal and an output terminal for providing an output signal,
- a second inverter circuit having an input terminal connected to said second output terminal and an output terminal for providing an output signal complementary to that at the output terminal of said first inverter, and
- means for applying given logic signals to the input terminals of said first switching circuit and for simultaneously applying complementary logic signals to the input terminals of said second switching circuit.
5 more elements
A differential logic system comprising
- a first switching circuit including input terminals and a first output node having a given signal,
- a second switching circuit including input terminals and a second output node having a signal complementary to that of said first output node,
- a first P channel device connected between said first output node and a source of potential,
- a second P channel device connected between said second output node and said source of potential,
- a first inverter circuit having an input connected to said first output node and an output terminal,
- a second inverter circuit having an input connected to said second output node and an output terminal,
- means for applying clock pulses to said first and second P channel devices, and
- means for applying differential logic signals simultaneously to the input terminals of said first and second switching circuits.
5 more elements
A differential logic system comprising
- a logic network having inputs for receiving differential input signals and first and second output nodes for providing complementary output signals,
- a voltage source,
- a first clocked device connected between said first output node and said voltage source,
- a second clocked device connected between said second output node and said voltage source,
- clocked enabling means connected between a point of reference potential and said first and second output nodes through said logic network,
- means for applying clock pulses to said first and second clocked devices and said clocked enabling means,
- a first inverter circuit having an input connected to said first output node and an output terminal, and
- a second inverter circuit having an input connected to said second output node and an output terminal.
5 more elements
A differential logic circuit comprising
- an exclusive OR logic network having input terminals for receiving differential logic input signals and first and second output nodes for providing complementary output signals,
- clocked means for enabling said network,
- a voltage source,
- a first clocked device connected between said first output node and said voltage source,
- a second clocked device connected between said second output node and said voltage source,
- means for applying clock pulses to said clocked means and said first and second clocked devices,
- a first inverter having an input terminal connected to said first output node and an output terminal, and
- a second inverter having an input terminal connected to said second output node and an output terminal.
5 more elements
A differential logic system comprising
- a first switching circuit arranged in the form of an exclusive OR circuit including N channel transistors, input terminals and a first output terminal having a given signal,
- a second switching circuit arranged in the form of an exclusive OR circuit including N channel transistors, input terminals and a second output terminal having a signal complementary to that of said first output terminal,
- a voltage source,
- a first clocked device connected between said voltage source and said first output terminal,
- a second clocked device connected between said voltage source and said second output terminal,
- a first inverter circuit having an output terminal and an input terminal connected to said first output terminal,
- a second inverter circuit having an output terminal and an input terminal connected to said second output terminal, and
- means for applying logic signals simultaneously to the input terminals of said first and second switching circuits.
5 more elements
Dependencies are inferred from the claim text.