ISO7741DBQR

Overview

The ISO7741DBQR is a quad-channel digital isolator from Texas Instruments, housed in a 16-pin SSOP package. It features capacitive coupling for signal isolation with a reinforced insulation voltage of 5000 Vrms and supports data rates up to 100 Mb/s. The device operates within a supply voltage range of 2.25 V to 5.5 V, consuming typical currents of 8.6 mA and 18 mA on the respective sides. Key electrical parameters include a propagation delay of 10.7 ns, rise/fall times of 3.9 ns, and a common-mode transient immunity of 85 kV/µs. It functions unidirectionally with three forward channels and one reverse channel across an operating temperature range of -55°C to +125°C.

Feature Summary

• Provides robust electromagnetic compatibility performance suitable for noisy industrial environments
• Utilizes capacitive coupling technology to achieve high-speed digital signal transmission
• Offers reinforced insulation ratings ensuring safety compliance in isolated circuits

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced isolation barriers
• Power metering applications involving high-voltage sensing

Procurement Notes

Verify that the specific suffix 'DBQR' corresponds to the SSOP-16 package and reel packaging configuration as listed in official Texas Instruments documentation. Confirm that the component meets RoHS standards and humidity sensitivity classifications prior to integration into production assemblies.

Selection Notes

Select this component when a quad-channel solution with unidirectional data flow is required. Ensure the design accommodates the specified 2.25 V to 5.5 V supply rails and utilizes the SSOP-16 footprint. Validate that the 100 Mb/s data rate and 85 kV/µs CMTI meet the system's isolation and speed requirements.

Part Context

This part belongs to the ISO774x family of high-speed digital isolators designed by Texas Instruments. It shares architectural similarities with other members like the ISO7741DWR but differs in package type and tape-and-reel specifications. The series emphasizes robust EMC performance and reinforced isolation capabilities for demanding applications.

Replacement Considerations

Direct substitutes within the same family include ISO7741DWR for different packaging options. Cross-reference datasheets to ensure pinout compatibility and identical electrical characteristics before swapping components.