SI32174-C-GM1R

Telecom Overview

The SI32174-C-GM1R is a single-channel ProSLIC FXS interface IC from Skyworks Solutions. It operates on a 3.3 V supply with 3.3 V or 1.8 V I/O options. The device supports –110 V battery voltage ratings and includes wideband voice capabilities. It features integrated DTMF detection, PCM/SPI digital interfaces, and an internal tracking DC-DC controller. The component is housed in a 5x7 mm 42-pin QFN package.

Telecom Feature Summary

• Performs all BORSCHT functions for complete FXS telephony solutions
• Supports wideband audio processing and DTMF detection
• Integrates a tracking DC-DC controller for optimal battery voltage generation
• Offers global programmability for ringing parameters and line impedance

Telecom Applications

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

Telecom Procurement Notes

Verify the specific G-grade temperature rating (-40°C to +85°C) against system requirements. Confirm the –110 V battery voltage specification matches the target loop conditions. Ensure the 42-pin QFN footprint aligns with the PCB land pattern guidelines provided in the datasheet.

Telecom Selection Notes

Select this model for applications requiring wideband voice support and DTMF detection within a single channel. Compare against the Si32170/1 variants if pulse metering is required instead of DTMF detection. Verify that the –110 V rating is sufficient for the intended ringing voltage requirements compared to the –140 V rated alternatives.

Telecom Part Context

This component belongs to the Si3217x-C family of ProSLIC products. It shares pin compatibility with other devices in the series, such as the Si32170, Si32171, and Si32176. The C-revision devices offer updated specifications compared to the previous B-revision family.

Telecom Replacement Considerations

Direct substitutes include other Si3217x-C variants like the Si32171-C-GM1R or Si32176-C-GM1R, provided the functional differences in DTMF detection versus pulse metering are acceptable.