ISO7740DBQR

Overview

The ISO7740DBQR is a quad-channel digital isolator from Texas Instruments, utilizing capacitive coupling technology. It operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. The device features four unidirectional channels with a maximum propagation delay of 10.7 ns and rise/fall times of 3.9 ns. It offers an isolation rating of 5000 Vrms and a common-mode transient immunity of 85 kV/µs. Operating temperatures span from -55°C to +125°C, housed in a 16-SSOP package.

Feature Summary

• Provides reinforced insulation barrier for high reliability
• Ensures robust electromagnetic compatibility performance
• Supports high-speed data transmission at 100 Mbps

Applications

• Industrial automation systems
• Medical equipment signal isolation
• Power metering circuits

Procurement Notes

Verify the specific suffix DBQR confirms the SSOP-16 package and reel packaging configuration. Ensure the component meets RoHS compliance requirements for your region. Confirm that the 5000 Vrms isolation rating aligns with safety standards for your application. Check moisture sensitivity level handling procedures during assembly.

Selection Notes

Select this component when four isolated channels are required in a single package. Consider the 5000 Vrms rating for applications demanding higher isolation than standard variants. Evaluate the 100 Mb/s speed against system timing requirements. Compare power consumption against other channel counts if fewer channels suffice.

Part Context

This part belongs to the ISO774x family of high-speed digital isolators. It shares architectural similarities with ISO7741 and ISO7742 but differs in channel count and isolation ratings. The DBQR suffix denotes the specific tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

ISO7740DWQR is available as a pin-compatible alternative in a SOIC-16 package.