I2C isolators
Bidirectional I2C isolators for robust communication
Our portfolio of basic and reinforced isolated I2C devices enables reliable bidirectional data transfer with high-noise immunity, high-EMC and the industry's longest lifetimes. Our I2C isolators help you reduce cost and board space by eliminating external logic devices that support bidirectional I2C communication.
Browse by category
Select by application
Industrial I2C isolators
Bidirectional isolators with bidirectional or unidirectional clock options, high IEC-ESD performance and high immunity for applications like power over Ethernet (PoE), power delivery and motor drives
Automotive I2C isolators
Bidirectional isolators with bidirectional or unidirectional clock options. High immunity in small packages that enable compact design in battery management systems (BMS) and on-board chargers (OBC)
Related categories
Technical resources
Application brief
How Do Isolated I2C Buffers with Hot-Swap Capability and IEC ESD Improve ... (Rev. A)
Learn how isolated I2C buffers with hot-swap capability and IEC ESD improve isolated I2C communication.
Technical article
Top 6 design questions about I2C isolators
Solve commom design challenges with our isolated I2C FAQs.
Certificate
Isolation certifications
Get a quick view of which worldwide industry standards our isolation products meet, including VDE, CSA, CQC and UL.
Design & development resources
Reference design
High-accuracy battery management unit reference design for 48–1500V energy storage system
This reference design is a high-side, N-channel MOSFET control (up to 32s) battery management unit (BMU), using the stacked BQ769x2 battery monitor family. This design also integrates a CAN interface for BMU stacking high-voltage (up to 1500V) energy storage station applications. High-side, (...)
Reference design
Isolated power architecture reference design for communication and analog input/output modules
This reference design provides a means to isolate I2C or SPI communication lines. This is often required in grid infrastructure applications such as protection relays and circuit breakers where high voltages are involved. This reference design provides both power isolation and signal isolation.
Reference design
EMC Compliant, Group Isolated, 2-Channel Binary Input Module for Wide AC/DC Input Reference Design
This reference design showcases a cost-optimized architecture that improves resolution of a binary-input module. A microcontroller unit (MCU) is shared between two-input channels (group isolation) to minimize the cost per channel. Wide-input range is covered using an amplifier with gain and (...)