ISO1176DWG4

Overview

The ISO1176DWG4 is a single-channel digital isolator transceiver designed for PROFIBUS and RS-485 applications. It integrates capacitive coupling technology to provide electrical isolation between the device sides. Key specifications include a data rate of 40 Mb/s, an insulation voltage of 2500 Vrms, and a propagation delay of 80 ns. The device operates within a supply voltage range of 3.15 V to 5.5 V and functions at temperatures from -40°C to +85°C. It is housed in a 16-pin SOIC package.

Feature Summary

• Provides galvanic isolation via capacitive coupling technology
• Supports high-speed signaling up to 40 Mbps
• Complies with EN 50170 and TIA/EIA-485-A standards

Applications

• PROFIBUS communication networks
• RS-485 industrial bus systems
• PLC I/O modules requiring signal isolation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for End-of-Life (EOL) notices, as availability may be restricted. Ensure the specific suffix matches project requirements for packaging and material composition before finalizing orders.

Selection Notes

Select this component when a single-channel isolated interface is required for RS-485 or PROFIBUS protocols. Consider the 2500 Vrms isolation rating and 40 Mbps speed against system noise immunity needs. Evaluate the 16-SOIC footprint for PCB layout constraints and ensure operating temperature ranges align with environmental conditions.

Part Context

This part belongs to the ISO1176 series of isolated transceivers from Texas Instruments. It serves as a bridge between low-voltage logic circuits and differential bus lines, ensuring signal integrity while protecting sensitive components from high-voltage transients common in industrial environments.

Replacement Considerations

ISO1176DWR is a verified alternative offering identical functionality in a tape-and-reel package format.