ISO1640BDR

Overview

The ISO1640BDR is a hot-swappable, robust-EMC bidirectional I2C digital isolator manufactured by Texas Instruments. It features two channels with capacitive coupling isolation and supports data rates up to 1.7 Mb/s. The device operates within a supply voltage range of 2.25 V to 5.5 V and provides an insulation voltage of 3000 Vrms. It exhibits a propagation delay of 11 ns and functions reliably across an extended temperature range from -40°C to +125°C. Packaged in an 8-pin SOIC (D) format, it is designed for high-reliability industrial applications requiring isolated I2C communication.

Feature Summary

• Supports hot-swappable operation without damage during live connection
• Provides robust electromagnetic compatibility for noisy environments
• Enables bidirectional clock and data transmission on I2C lines

Applications

• Industrial automation systems requiring isolated sensor interfaces
• Medical equipment needing galvanic isolation for safety compliance
• Automotive electronics utilizing I2C bus architectures

Procurement Notes

Verify the specific suffix 'G4' or 'BDR' against the manufacturer's current datasheet to ensure component revision alignment. Confirm moisture sensitivity level requirements and reflow soldering profiles prior to assembly. Check for regional distribution restrictions as availability may vary by location. Ensure proper handling procedures are followed due to humidity sensitivity classification.

Selection Notes

Select this component when bidirectional I2C isolation with hot-swap capability is required. It is suitable for designs needing high EMC immunity and wide operating temperature ranges. Consider the 8-pin SOIC package constraints for PCB layout. Evaluate power consumption specifications against system energy budgets before finalizing the design choice.

Part Context

This part belongs to the ISO164x family of robust-EMC bidirectional I2C digital isolators. It complements other interface ICs by providing reliable signal transmission across isolation barriers. The series is designed to meet stringent industrial standards for noise immunity and operational stability in harsh electrical environments.

Replacement Considerations

Check for ISO1640BDRG4 as a potential variant with updated manufacturing revisions. Verify pinout compatibility and electrical parameters against alternative isolators from other manufacturers if sourcing constraints exist.

FAQ

Does the ISO1640BDR support bidirectional clock signals?

Yes, the device supports bidirectional clock and data communication compatible with I2C protocols.

What is the maximum data rate supported by this isolator?

The ISO1640BDR supports data rates up to 1.7 Mb/s.