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Cost-effective and reliable four-channel digital isolator

The NSi823xC is a cost-effective high-reliability three-channel digital isolator. The series of products are UL1577 qualified, and support dielectric strength of 5kVrms, featuring low power consumption, high electromagnetic immunity and low radiation. The data rate of the product is as high as 100Mbps, and the common mode transient immunity (CMTI) is as high as 150kV/us. It outputs level configuration by default when input is missing and provides digital channel direction configuration. The wide power supply voltage range of this series of devices supports direct connection with most digital interfaces, making it easy for level conversion. Excellent system-level EMC performance improves reliability and stability in operation.

Product Features

•  Isolated withstand voltage of 5000Vrms

•  VDE Reinforced Isolation Qualification

•  Data rate DC of up to 100Mbps

•  Supply voltage range: 2.5~5.5V

•  High CMTI: ±150kV/μs

•  Chip-level ESD: HBM: +8kV

•  Enhanced ESD, EFT, surge protection at system level

•  Low propagation delay typical <15ns

•  Low power consumption: 1.5mA/ch(1 Mbps)

•  Operation temperature: 40~125℃

•  RoHS compliant package: SOW16

Safety Certificate

• UL1577 qualified: 5kVrms for 1 min.

• CQC qualified: Conform to GB4943.1 -2011

• CSA qualified: Components conform to 5A

• VDE qualified: DIN V VDE V 0884-11:2017-1


• Industrial automation system

• Isolated SPI, RS232, RS485

• Universal Multi-Channel Isolator

• Motor control

Functional Block Diagram


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Consumer Electroncis
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Signal Chain
Power Management
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