CPC5902G

Overview

The CPC5902G is a dual, optically isolated, bidirectional logic-bus repeater manufactured by IXYS Integrated Circuits Division. It galvanically isolates two open-drain logic signals, enabling the connection of I2C or SMBus devices across different voltage domains. The device features an input supply range of 1.65V to 5.5V and an output supply range of 1.65V to 5.5V. It provides a high isolation voltage of 3750 Vrms and operates within a temperature range of -40°C to +85°C. Packaged in an 8-pin DIP, it supports data rates up to 1 MHz.

Feature Summary

• Provides galvanic isolation between two open-drain logic buses
• Supports bidirectional signal transmission for I2C and SMBus protocols
• Enables level shifting between different voltage domains

Applications

• I2C bus extension across isolated boundaries
• SMBus system isolation
• Connecting low-voltage controllers to higher-voltage peripherals

Procurement Notes

Verify the specific suffix (e.g., G for DIP) matches the required package type. Confirm RoHS compliance status through official datasheets. Check for active production status as some variants may be discontinued. Ensure the supplier provides valid traceability documentation for industrial applications.

Selection Notes

Select this component when bidirectional isolation is required for open-drain interfaces. Compare with single-channel alternatives if only one bus line needs isolation. Verify that the required data rate does not exceed 1 MHz. Ensure the operating voltage ranges of both sides fall within the specified 1.65V to 5.5V limits.

Part Context

This part belongs to the CPC590x series of optically isolated bus repeaters. It is functionally similar to the CPC5903 but differs in channel configuration or pinout. The 'G' suffix typically denotes the 8-pin DIP package variant. It serves as a bridge for digital communication lines requiring electrical separation.

Replacement Considerations

Public confirmed substitutes include CPC5903GS for dual-channel isolation. Verify pin compatibility before substitution. Single-channel alternatives like CPC5902 require two units for full I2C isolation.