Semiconductor integrated circuit device
AssigneeNEC Electronics Corporation
InventorsMasanori Tanaka, Morihisa Hirata, Hitoshi Okamoto
Life of this patent
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Abstract
Disclosed is a semiconductor integrated circuit device that includes an output circuit with power thereof supplied from one power supply system, an input circuit with an input terminal thereof connected to an output terminal of the output circuit through a signal line and with power thereof supplied from other power supply system different from the one power supply system, and a circuit that restrains a current flowing from the output circuit into the signal line when an ESD stress is applied from the output circuit to a signal transmitting/receiving portion of the input circuit.
Claims18
A semiconductor integrated circuit device comprising:
- a plurality of power supply systems;
- a signal line through which signal transfer is performed between a circuit in one power supply system and a circuit in an other power supply system;
- and
- a circuit that restrains a current flowing from the circuit in said one power supply system into said signal line when an abnormal voltage is applied to said one power supply system.
A semiconductor integrated circuit device comprising:
- an output circuit with power thereof supplied from a first power supply system;
- an input circuit with power thereof supplied from a second power supply system;
- a signal line through which signal transfer is performed between the output circuit and the input circuit;
- and
- a circuit that restrains a current flowing into said signal line when an ESD (Electro-Static Discharge) stress is applied to a signal transmitting/receiving portion of said output circuit and said input circuit.
Dependencies are inferred from the claim text.