ISO6721RFBQDRQ1

Overview

The ISO6721RFBQDRQ1 is an automotive-grade, general-purpose dual-channel digital isolator manufactured by Texas Instruments. It operates with a supply voltage range of 1.71 V to 5.5 V and supports data rates up to 50 Mbps. The device provides 3000 Vrms isolation voltage and features a common-mode transient immunity (CMTI) of 100 kV/µs. It utilizes capacitive coupling technology for signal transmission across the isolation barrier. The component is housed in an 8-pin SOIC package with a width of 3.90 mm. It functions within a temperature range of -40°C to +125°C and includes shutdown capabilities.

Feature Summary

• Provides galvanic isolation between circuits using capacitive coupling technology
• Supports bidirectional or unidirectional signal transmission with high common-mode transient immunity
• Designed for automotive applications meeting specific reliability standards
• Integrates shutdown functionality to reduce power consumption during idle states

Applications

• Automotive gate driver interfaces
• Inverter control systems
• Motor drive isolation
• On-board charger communication

Procurement Notes

Verify the complete part number including suffixes such as RFBQD to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements prior to ordering. Check for automotive qualification certifications relevant to your specific application environment. Ensure ESD handling procedures are followed due to the sensitive nature of CMOS isolation devices.

Selection Notes

Select this component when high CMTI is required to prevent false triggering in noisy automotive environments. Compare against ISO6721 variants if different isolation voltages or pin configurations are needed. Consider the 8-SOIC package constraints for PCB layout. Verify that the 50 Mbps data rate meets the system timing requirements. Evaluate power consumption differences compared to magnetic isolators if efficiency is critical.

Part Context

This device belongs to the ISO6721-Q1 family of automotive digital isolators from Texas Instruments. It shares architectural similarities with other members like the ISO6721FQDRQ1 but differs in specific insulation ratings and functional configurations. The family is designed to replace bulky optocouplers in modern automotive electronics, offering smaller form factors and higher reliability.

Replacement Considerations

Direct replacements include ISO6721QDWVRQ1 and ISO6721FQDRQ1, provided isolation ratings and pinouts match. Verify that substitute parts meet the same AEC-Q100 qualification standards. Check for any differences in propagation delay or power supply requirements before finalizing substitution.