SI88322BC-AS

Digital Isolators Overview

The SI88322BC-AS is a Skyworks Solutions automotive-grade digital isolator featuring two independent channels with unidirectional signal transmission. It utilizes capacitive coupling technology to provide electrical isolation, certified for up to 3750 Vrms isolation voltage. The device supports data rates of 100 Mb/s and operates within a supply voltage range of 3 V to 5.5 V. Key timing parameters include a maximum propagation delay of 23 ns, with rise and fall times capped at 2.5 ns. It functions reliably across an extended temperature range from -40°C to +125°C and is housed in a 20-pin SOIC package.

Digital Isolators Feature Summary

• Automotive-grade qualification ensuring reliability for vehicle applications
• Capacitive coupling architecture providing high-speed digital isolation
• Certified by UL, CSA, VDE, and CQC for international safety standards

Digital Isolators Applications

• Automotive electronic control units requiring galvanic isolation
• High-voltage industrial motor drive systems
• Power conversion equipment interfaces

Digital Isolators Procurement Notes

Verify the specific suffix 'AS' corresponds to the tube packaging format when sourcing components. Confirm that the part meets the required automotive quality standards for your specific application environment. Cross-reference the datasheet revision to ensure compatibility with existing design specifications. Check for any recent product change notifications that might affect long-term availability or pinout consistency.

Digital Isolators Selection Notes

Select this component when unidirectional signal isolation is required in space-constrained designs. The 20-pin SOIC package offers a balance between channel count and board area efficiency. Ensure the system voltage does not exceed the 5.5 V maximum rating. Consider the 100 Mb/s data rate limit when designing communication protocols. Verify that the 3750 Vrms isolation rating meets the creepage and clearance requirements of the target application.

Digital Isolators Part Context

This device belongs to the Si88322 series of digital isolators from Skyworks Solutions. It is designed as a robust interface solution for noisy environments where ground potential differences exist. The series emphasizes low power consumption and high noise immunity compared to traditional magnetic isolators. It serves as a critical component for protecting sensitive low-voltage logic circuits from high-voltage transients.

Digital Isolators Replacement Considerations

The SI88322BC-ISR is a reel-packaged variant of the same functional device. Other members of the Si8832x family may offer different channel counts or bidirectional capabilities but require schematic verification.