ISO7740FQDWRQ1

Overview

The ISO7740FQDWRQ1 is a quad-channel digital isolator from the ISO7740 series, manufactured by Texas Instruments. It features four unidirectional channels with 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 parameters include an insulation voltage of 5000 Vrms, a typical propagation delay of 10.7 ns, and a maximum power dissipation of 200 mW. It is housed in a 16-pin SOIC package (SOIC-16) and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Provides galvanic isolation via capacitive coupling technology for robust signal transmission
• Designed specifically for automotive environments with AEC-Q100 qualification
• Offers high common-mode transient immunity to withstand noisy electrical environments

Applications

• Automotive electronic control units requiring reinforced isolation
• Industrial communication interfaces demanding high EMC robustness
• Safety-critical systems utilizing reinforced double isolation barriers

Procurement Notes

Verify the complete part number including suffixes such as Q1 and WR to ensure correct automotive grade and tape-and-reel packaging configuration. Confirm that the specific revision matches the required AEC-Q100 qualification status. Check datasheet revisions for any updates regarding recommended operating conditions or pinout definitions before finalizing procurement orders.

Selection Notes

Select this component when reinforced isolation ratings are mandatory for safety compliance in automotive designs. Ensure the system requires unidirectional signal flow across all four channels. Verify that the SOIC-16 footprint aligns with the PCB layout constraints. Consider the 22.7 mA supply current if power budget limitations exist in the isolated domain.

Part Context

This device belongs to the ISO7740 family of digital isolators, which utilizes silicon dioxide (SiO2) isolation technology. The 'F' designation indicates reinforced isolation characteristics suitable for safety-related applications. The 'Q1' suffix denotes automotive qualification, while 'WR' specifies the reel packaging format. This distinguishes it from non-automotive or general-purpose variants in the broader ISO7740 lineup.

Replacement Considerations

ISO7740DWQ1 serves as a non-reel automotive alternative. ISO7740DWR is the general-purpose industrial equivalent without automotive qualification. ISO7740QDBQRQ1 offers the same functionality in an SSOP-16 package. Verify pin compatibility and isolation ratings when substituting these parts.