ISO7742QDBQRQ1

Overview

The ISO7742QDBQRQ1 is an automotive-grade digital isolator from the ISO774x-Q1 series, manufactured by Texas Instruments. It features four channels with a 2/2 channel split configuration and utilizes capacitive coupling technology. The device supports bidirectional or unidirectional data transmission at speeds up to 100 Mb/s. It operates within a supply voltage range of 2.25 V to 5.5 V, drawing a typical operating current of 13.4 mA. Key electrical specifications include a propagation delay of 10.7 ns, rise and fall times of 3.9 ns, and a pulse width distortion of 4.9 ns. It provides an insulation voltage of 2500 Vrms and maintains signal integrity with a common-mode transient immunity of 85 kV/µs. The component is housed in a 16-lead SSOP package and is qualified to AEC-Q100 standards for operation between -40°C and +125°C.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for robust reliability in vehicle environments
• High-speed data transmission capability supporting rates up to 100 Mb/s with low propagation delay
• Capacitive coupling isolation architecture providing enhanced electromagnetic interference immunity
• Wide operating temperature range suitable for demanding thermal conditions

Applications

• Automotive gateway systems requiring isolated communication interfaces
• Inverter control circuits in electric and hybrid vehicles
• On-board charger (OBC) monitoring and control loops
• Battery management system (BMS) isolation barriers

Procurement Notes

Verify the specific suffix 'QDBQRQ1' to confirm the SSOP-16 package, 2500 Vrms insulation rating, and automotive grade status. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined in the datasheet. Confirm that the 2/2 channel configuration matches the design requirements for bidirectional or unidirectional signal paths.

Selection Notes

Select this component when an automotive-certified quad-channel isolator with 2500 Vrms basic insulation is required. It is suitable for designs needing high common-mode transient immunity and low power consumption. Compare against the ISO7742FQDBQRQ1 if higher reinforced insulation ratings are necessary, or consider the ISO7742QDWRQ1 for alternative SOIC-16 packaging options while maintaining similar electrical performance.

Part Context

This part belongs to the ISO774x-Q1 family of automotive digital isolators. These devices are designed to replace traditional optocouplers in automotive applications, offering superior performance in speed, power consumption, and size. The family includes variants with different insulation ratings and channel configurations to support diverse isolation needs in modern vehicle architectures.

Replacement Considerations

ISO7742FQDBQRQ1 offers similar functionality with potentially different insulation ratings.