ISO1176TDWR

Overview

The ISO1176TDWR is an isolated PROFIBUS RS-485 transceiver manufactured by Texas Instruments. It integrates a digital isolator with an integrated transformer driver, eliminating the need for external magnetic components. The device supports signaling rates up to 40 Mbps and provides 2500 Vrms isolation voltage. It operates within a supply voltage range of 3.15V to 5.5V and functions across a temperature range of -40°C to 85°C. Packaged in a 16-pin SOIC (DWR) format, it meets EN 50170 and TIA/EIA-485-A standards.

Feature Summary

• Integrates a transformer driver to simplify isolated power design
• Provides robust signal integrity for PROFIBUS applications
• Supports high-speed data transmission up to 40 Mbps

Applications

• PROFIBUS network nodes
• Industrial automation systems
• Isolated RS-485 communication interfaces

Procurement Notes

Verify the specific suffix 'TDWR' indicates the integrated transformer driver variant, distinct from standard isolators. Confirm package type is 16-SOIC. Check RoHS compliance status as per latest datasheet revision. Ensure ordering quantities align with manufacturer reel specifications.

Selection Notes

Select this component when designing PROFIBUS interfaces requiring integrated isolation power generation. It reduces bill of materials by removing external transformers. Suitable for space-constrained industrial designs needing certified isolation without complex magnetic layout.

Part Context

Part of the ISO1176 family of isolated transceivers. Differentiates from ISO1176DWR by including the transformer driver circuitry on-chip. Designed specifically for PROFIBUS DP/PA networks requiring galvanic isolation between master and slave devices.

Replacement Considerations

ISO1176DWG4 is a related variant but lacks the integrated transformer driver. Verify functional equivalence if substituting, as external components will be required for isolation power in non-TDWR parts.