Logic signal transmission circuit with isolation barrier

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United States of America Patent

PATENT NO 8890565
SERIAL NO

13761533

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A logic signal transmission circuit includes a driving circuit, an isolation section, and a latch section. The driving circuit converts an input digital signal to a differential digital signal. The isolation section blocks direct current and passes the differential digital signal. The latch section has even numbers of inverters which are connected in a loop and output a logic signal by turning ON and OFF a power supply voltage in a complementary manner. An input impedance of the latch section is set so that when a logic level of the differential digital signal changes, a transient voltage inputted through the isolation section to the latch section changes across a threshold voltage of the latch section. When the transient voltage changes across the threshold voltage, a logic level of the logic signal changes.

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Patent Owner(s)

  • DENSO CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Honda, Kazutaka Chiryu, JP 37 150
Makihara, Tetsuya Nukata-gun, JP 12 91

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