ISO7831DWR

Overview

The ISO7831DWR is a triple-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It supports signaling rates up to 100 Mbps with a propagation delay of 11 ns and pulse width distortion of 550 ps. The device operates on a wide supply voltage range of 2.25 V to 5.5 V, accommodating level translation between these voltages. It features reinforced isolation certifications with an insulation voltage of 5700 VRMS and an isolation voltage of 8000 VPK. The component functions within a temperature range of –55°C to 125°C and utilizes capacitive coupling for signal transmission.

Feature Summary

• Provides triple-channel bidirectional or unidirectional data transmission via capacitive coupling
• Offers reinforced isolation certifications suitable for high-voltage safety standards
• Supports wide supply voltage operation enabling direct level translation between 2.25 V and 5.5 V domains
• Maintains signal integrity with low propagation delay and minimal pulse width distortion

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced isolation barriers
• Power metering applications with high-voltage interfaces
• Inverters and motor drives for control signal isolation

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and isolation ratings. Ensure the selected variant matches the required channel configuration and polarity. Check for updated revision levels that may affect mechanical dimensions or electrical characteristics. Confirm compliance with RoHS directives and relevant safety certifications before integration into final designs.

Selection Notes

Select this component when triple-channel isolation is required within a single package. Consider the 100 Mbps data rate capability for high-speed communication links. Evaluate the 5700 VRMS insulation rating against system safety requirements. Ensure the operating temperature range meets environmental conditions. Compare power consumption metrics if energy efficiency is a critical design constraint.

Part Context

This device belongs to the ISO7831x family of high-performance digital isolators. It complements other Texas Instruments isolation products by offering a compact solution for multi-channel applications. The series is designed to replace bulky magnetic couplers in modern electronic systems. It integrates advanced capacitive technology for reliable signal transfer across isolation barriers.

Replacement Considerations

Consult official substitution guides for compatible alternatives. Verify pin-to-pin compatibility and electrical parameter equivalence. Ensure replacement parts meet the same isolation voltage and temperature specifications.