ISO7740QDBQRQ1

Overview

The ISO7740QDBQRQ1 is an automotive-grade, reinforced quad-channel digital isolator manufactured by Texas Instruments. It features four independent channels with unidirectional signal transmission and capacitive coupling isolation technology. The device operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. Key electrical specifications include an insulation voltage of 2500 Vrms, a propagation delay of 10.7 ns, and a common-mode transient immunity of 85 kV/µs. It is housed in a 16-pin SSOP package and is qualified under AEC-Q100 standards for operation between -40°C and +125°C.

Feature Summary

• Automotive-grade robustness with AEC-Q100 qualification for high reliability in vehicle environments
• Reinforced insulation design providing enhanced safety and regulatory compliance
• High common-mode transient immunity of 85 kV/µs for noise-resistant signal integrity

Applications

• Automotive electronic control units (ECUs)
• In-vehicle communication networks
• Battery management systems
• Charging infrastructure interfaces

Procurement Notes

Verify the complete part number including suffixes to ensure correct packaging and temperature grade. Confirm AEC-Q100 certification status for automotive applications. Check datasheet revisions for updated mechanical drawings and thermal characteristics. Ensure compatibility with system voltage levels and isolation requirements before integration.

Selection Notes

Select this component when reinforced isolation and automotive qualification are required. Compare channel count and insulation voltage against system needs. Consider the SSOP package dimensions for PCB layout constraints. Evaluate power consumption and propagation delay relative to timing requirements.

Part Context

This device belongs to the ISO7740 family of high-speed digital isolators. It shares architectural similarities with other members but is specifically optimized for automotive use with reinforced insulation ratings. The Q1 suffix denotes automotive qualification, while DBQR indicates the SSOP-16 tape and reel package configuration.

Replacement Considerations

ISO7740QDWRQ1 offers similar functionality in a SOIC-16 package. ISO7742QDBQRQ1 provides bidirectional channels instead of unidirectional. Verify pinout compatibility and insulation voltage ratings when substituting.