ISO7721FQDWRQ1

Overview

The ISO7721FQDWRQ1 is an automotive-grade, reinforced dual-channel digital isolator manufactured by Texas Instruments. It features a 1/1 channel configuration in a 16-pin SOIC package. The device supports data rates up to 100 Mbps with a maximum propagation delay of 17 ns and a typical rise/fall time of 3.9 ns. It operates on a supply voltage range of 2.25 V to 5.5 V with a typical quiescent current of 7.3 mA per channel. Key electrical specifications include a 5000 Vrms isolation voltage, a minimum common-mode transient immunity (CMTI) of 85 kV/µs, and a pulse width distortion of 0.5 ns. It functions within a temperature range of -40°C to +125°C.

Feature Summary

• Provides reinforced insulation for high-voltage safety applications
• Features robust electromagnetic compatibility performance
• Offers bidirectional signal transmission capability

Applications

• Automotive powertrain control systems
• On-board charging infrastructure
• Battery management systems

Procurement Notes

Verify the specific suffix 'W' indicates the 16-pin wide SOIC package variant distinct from the standard 8-pin version. Confirm AEC-Q100 qualification status for your target automotive grade requirements. Ensure design-in documentation references the correct datasheet revision for the 16-pin footprint. Cross-reference pinouts carefully against schematic designs to avoid orientation errors during assembly.

Selection Notes

Select this component when reinforced isolation barriers are mandated by safety standards such as IEC 60747-17. The 16-pin SOIC form factor accommodates wider creepage distances compared to smaller packages. Consider the 85 kV/µs CMTI rating for environments with rapid voltage switching transients. Evaluate the 100 Mbps data rate sufficiency for the intended communication protocol bandwidth needs.

Part Context

This part belongs to the ISO7721-Q1 family of automotive digital isolators. It utilizes capacitive coupling technology to transmit signals across an isolation barrier. The series is designed to replace bulky magnetic isolators in modern electronic control units. It complements other variants like the ISO7721FQDRQ1 which shares similar electrical characteristics but differs in physical packaging dimensions.

Replacement Considerations

• ISO7721FQDRQ1