SI88243BC-ISR

Digital Isolators Overview

The SI88243BC-ISR is a general-purpose digital isolator from Skyworks Solutions Inc. featuring capacitive coupling technology. It provides four unidirectional channels with a data rate of 100 Mbps and an isolation voltage of 5000 Vrms. The device operates within a supply voltage range of 3V to 5.5V and supports a common-mode transient immunity of 40 kV/µs. Typical propagation delays are 12.6 ns for low-to-high and 17.5 ns for high-to-low transitions, with rise and fall times of 2.5 ns each. It is housed in a 20-SOIC package (0.295" width) and functions across a temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates four independent unidirectional signal paths for general-purpose digital isolation.
• Utilizes silicon dioxide (SiO2) capacitive coupling technology for robust signal transmission.
• Includes an integrated isolated DC-DC converter to power the secondary side without external components.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.

Digital Isolators Applications

• Industrial process control systems requiring galvanic isolation
• Medical equipment needing reliable signal separation
• Power management circuits with isolated feedback loops
• Automotive electronics demanding high-voltage isolation

Digital Isolators Procurement Notes

Verify the specific suffix 'BC' indicates the standard operating temperature range and package variant. Confirm that the 'ISR' suffix denotes tape-and-reel packaging suitable for automated assembly. Check current lifecycle status as some variants may be marked Not Recommended for New Designs. Ensure compatibility with existing PCB footprints for the 20-SOIC wide package before finalizing procurement plans.

Digital Isolators Selection Notes

Select this component when four-channel unidirectional isolation is required with an integrated power source on the secondary side. It is suitable for applications needing 5000 Vrms isolation strength and 100 Mbps data rates. Consider the 20-SOIC package dimensions for board space constraints. Evaluate thermal performance requirements given the operating temperature range up to 125°C.

Digital Isolators Part Context

This part belongs to the Si88x4x family of digital isolators from Skyworks Solutions. These devices are designed to replace traditional optocouplers in modern electronic designs. The family offers various channel configurations and isolation voltages to meet diverse interface requirements in industrial and automotive sectors.

Digital Isolators Replacement Considerations

SI88243BD-ISR is a listed substitute within the same product family offering similar specifications and functionality.