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Patent Searching and Data


Title:
INTERFACE CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/104943
Kind Code:
A1
Abstract:
An interface circuit, belonging to the technical field of electronics. The interface circuit comprises: an inverter. An input end of the inverter is connected to a signal output end of a first power supply domain circuit, and an output end of the inverter is connected to a signal input end of a second power supply domain circuit; a power supply end of the inverter is connected to a power supply of the first power supply domain circuit, and a grounding end of the inverter is connected to a reference ground of the second power supply domain circuit; alternatively, the power supply end of the inverter is connected to a power supply of the second power supply domain circuit, and the grounding end of the inverter is connected to a reference ground of the first power supply domain circuit. When the voltage of the power supply end of the inverter is greater than the voltage of the grounding end of the inverter, the interface circuit may ensure the correct transmission of a logic level of a signal, thereby ensuring the stability and reliability of a data transmission link between the first power supply domain circuit and the second power supply domain circuit, and improving the anti-static interference capability of a chip provided with the interface circuit.

Inventors:
ZHOU, Yuzhen (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
CAO, Wei (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
FENG, Jun (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
TAO, Yunbin (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
Application Number:
CN2018/085458
Publication Date:
June 06, 2019
Filing Date:
May 03, 2018
Export Citation:
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Assignee:
HUAWEI TECHNOLOGIES CO., LTD. (Huawei Administration Building, BantianLonggang Distric, Shenzhen Guangdong 9, 518129, CN)
International Classes:
H03K19/0175
Attorney, Agent or Firm:
BEIJING SAN GAO YONG XIN INTELLECTUAL PROPERTY AGENCY CO., LTD. (A-1-102, He Jing Yuan Ji Men Li, Xueyuan Road,Haidian District, Beijing 8, 100088, CN)
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