SI32919-A-FSR

Telecom Overview

The SI32919-A-FSR is a single-channel ProSLIC foreign exchange office (FXO) line-side device manufactured by Silicon Laboratories. It operates from a 3.3 V supply and interfaces via standard PCM or SPI digital protocols. The component provides greater than 5 kV isolation, supports up to +6 dBm TX/RX levels, and includes integrated ring detection and parallel handset detection. It features Type I and II caller ID support and programmable digital hybrid capabilities. The device is housed in a 16-pin SOIC package with an operating temperature range of 0°C to 70°C.

Telecom Feature Summary

• Integrates patented capacitive isolation technology for seamless connection to FXS devices
• Supports global programmability and simplified configuration diagnostics
• Includes integrated DC-DC controller for optimal battery voltage generation

Telecom Applications

• Customer Premise Equipment (CPE)
• VoIP DSL Gateways and Routers
• Wireless Local Loop (WLL)
• Integrated Access Devices (IAD)

Telecom Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm regional compliance and temperature grade. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Cross-reference the part number with the latest revision history to confirm compatibility with existing firmware APIs and hardware designs.

Telecom Selection Notes

Select this component when designing FXO line-side interfaces requiring high isolation and global regulatory compliance. Verify that the host system supports the required PCM or SPI digital interface protocols. Confirm that the application environment remains within the specified 0°C to 70°C operating temperature range for the F-grade variant.

Telecom Part Context

This component belongs to the Si3291x family of ProSLIC products, designed as pin-compatible counterparts to the Si3217x FXS series. It enables complete telephony interface solutions compliant with LSSGR, ITU, and ETSI specifications. The family utilizes Silicon Laboratories' proprietary isolation technology to facilitate robust analog-digital conversion in voice communication systems.

Telecom Replacement Considerations

The Si32911-A-FSR serves as a regional alternative within the same package and feature set. Both parts share identical electrical characteristics and pinouts but differ in supported ringer thresholds and on-hook speeds. Verify specific regional certification requirements before substituting.