SI86S640BB-AU

Digital Isolators Overview

The SI86S640BB-AU is an automotive-grade digital isolator from Skyworks Solutions, featuring four unidirectional channels with capacitive coupling technology. It provides a basic insulation voltage of 2500 Vrms and supports data rates up to 150 Mb/s. The device operates within a supply voltage range of 2.375 V to 5.5 V, consuming typical power currents of approximately 12 mA per channel. Propagation delay is typically 8 ns with rise and fall times around 4 ns. It is housed in a 16-pin QSOP package and certified to AEC-Q100 standards for operation between -40°C and +125°C.

Digital Isolators Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for harsh environment durability.
• High-voltage isolation capability using robust capacitive coupling technology.
• Unidirectional signal transmission optimized for specific interface directions.
• Wide operating temperature range supporting extreme thermal conditions.

Digital Isolators Applications

• On-board charger systems in electric vehicles
• Battery management system interfaces
• Motor control circuit isolation
• Inverter gate drive isolation

Digital Isolators Procurement Notes

Verify the specific suffix 'AU' corresponds to the required tube packaging configuration rather than reel options. Confirm that the QSOP-16 footprint matches the target PCB design constraints. Ensure the selected variant meets the specific AEC-Q100 qualification requirements for the intended automotive application zone. Cross-reference the datasheet revision to guarantee compatibility with existing design specifications.

Digital Isolators Selection Notes

Select this component when unidirectional isolation is required for automotive power electronics. The 150 Mb/s speed suits standard communication protocols like CAN or isolated UART. Consider the 2500 Vrms rating for primary-side to secondary-side separation. Evaluate the low power consumption against thermal management needs in dense packaging environments.

Digital Isolators Part Context

This part belongs to the Si86S6x series of high-reliability digital isolators designed specifically for automotive applications. It complements other variants in the family that may offer bidirectional channels or different insulation ratings. The series emphasizes safety compliance and long-term stability for critical vehicle subsystems.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pin-to-pin compatibility with existing designs before considering alternative manufacturers or series variants.