ISO6731DWR

Overview

The ISO6731DWR is a general-purpose triple-channel digital isolator manufactured by Texas Instruments. It features three independent channels with a 2/1 input/output configuration, supporting unidirectional signal transmission. The device operates within a supply voltage range of 2.25V to 5.5V and supports data rates up to 50Mbps. Key electrical specifications include a maximum propagation delay of 18ns for both high-to-low and low-to-high transitions, with typical rise and fall times of 2.6ns. It provides an isolation voltage of 5000Vrms and a common-mode transient immunity (CMTI) of 100kV/µs. The component is housed in a 16-SOIC package and functions across an operating temperature range of -40°C to +125°C.

Feature Summary

• Triple-channel architecture with 2-input/1-output configuration for versatile signal routing
• Robust electromagnetic compatibility characterized by 100kV/µs common-mode transient immunity
• High-speed data transmission capability supporting up to 50Mbps signaling rates
• Wide operational stability across extended industrial temperature ranges

Applications

• CAN bus interface isolation
• RS-232 communication link isolation
• RS-485 differential line isolation
• SPI peripheral isolation

Procurement Notes

Verify the specific suffix 'DWR' corresponds to the SOIC-16 package and tape-and-reel quantity when sourcing. Confirm that the required isolation voltage rating of 5000Vrms meets system safety standards. Ensure the 2.25V minimum supply voltage aligns with the target logic levels. Check for RoHS compliance documentation if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a compact solution for three isolated signals is required without needing shutdown functionality. The 2/1 channel arrangement suits applications where multiple inputs must be routed to single outputs or vice versa. Consider the 18ns propagation delay for timing-sensitive designs. The wide supply voltage range accommodates various logic families from 1.8V to 5V systems.

Part Context

This part belongs to the ISO6731 family of general-purpose digital isolators. It shares the same core technology and pinout structure as other variants in the series but differs in channel count and configuration. The DWR suffix specifically denotes the surface-mount SOIC-16 package format, distinguishing it from wider packages like FDWR.

Replacement Considerations

Direct replacements within the same family include ISO6731FDWR, which offers the same electrical performance in a wider SOIC-16 package. Cross-family comparisons should verify CMTI ratings and supply voltage compatibility.