SI32179-B-GM1

Telecom Overview

The Si32179-B-GM1 is a single-channel ProSLIC FXS interface IC operating from a 3.3 V supply with a 3.13 V to 3.47 V range. It supports –135 V battery voltage and features PCM/SPI interfaces. Key electrical parameters include a typical supply current of 44.2 mA in active off-hook states, 13.2 mA in high-impedance open states, and 10.0 mA for the system-side FXO interface. The device operates within an ambient temperature range of -40 °C to +85 °C (G-grade) and utilizes a 42-pin LGA package.

Telecom Feature Summary

• Performs all BORSCHT functions for telephony line control
• Integrates patented capacitive isolation technology for FXO connectivity
• Includes tracking DC-DC controller for optimal battery voltage generation
• Supports wideband voice, DTMF detection, and pulse metering

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 official documentation to confirm the exact voltage rating and feature set. Confirm that the G-grade temperature range meets the operational requirements. Ensure compatibility with the required digital interface protocol before procurement.

Telecom Selection Notes

Select this component when a complete FXS solution with integrated isolation is required. Verify that the –135 V battery voltage rating aligns with the target ringing voltage specifications. Ensure the design accommodates the 42-pin LGA package dimensions and thermal dissipation requirements.

Telecom Part Context

This part belongs to the Si3217xB family of pin-compatible ProSLIC products. It implements a foreign exchange station interface compliant with LSSGR, ITU, and ETSI standards. The series allows seamless connection to Si3291x FXO devices via capacitive isolation.

Telecom Replacement Considerations

Consult the manufacturer's ordering guide for alternative part numbers within the Si3217x family that offer different voltage ratings or feature sets.