SI32911-A-FS

Telecom Overview

The SI32911-A-FS is a single-channel ProSLIC foreign exchange office (FXO) line-side device from Silicon Laboratories. It provides greater than 5 kV isolation and supports FCC/CTR21 regions with one ringer threshold. The component operates within an ambient temperature range of 0 to 70 °C and complies with RoHS standards. It interfaces via PCM/GCI or SPI protocols, supporting up to +6 dBm TX/RX levels. Key features include parallel handset detection, Type I and II caller ID support, and an integrated ring detector.

Telecom Feature Summary

• Greater than 5 kV isolation capability
• Integrated ring detector for line monitoring
• Supports Type I and II caller ID formats

Telecom Applications

• Analog Terminal Adapters (ATA)
• VoIP DSL Gateways and Routers
• Small Office/Home Office (SOHO) PBX systems

Telecom Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm region-specific ringer thresholds and compliance certifications. Ensure the selected variant matches the required operational temperature grade and isolation specifications for the target deployment environment.

Telecom Selection Notes

Select this FXO component when interfacing analog telephony lines to digital VoIP gateways requiring high-voltage isolation. Consider the Si3291x series for applications needing parallel handset detection and programmable digital hybrid configurations alongside standard PCM or SPI connectivity.

Telecom Part Context

This part belongs to the Si3291x family of ProSLIC devices designed as line-side counterparts to the Si3217x FXS station-side ICs. The family utilizes patented capacitive isolation technology to enable seamless connection between station and office side components in integrated telephony solutions.

Telecom Replacement Considerations

The Si32919-A-FS serves as a compatible alternative offering global ringer thresholds and three on-hook speeds.