SI2434-C-FTR

Overview

The SI2434-C-FTR is a system-side ISOmodem network controller and processor IC manufactured by Skyworks Solutions. It supports data rates up to 33.6 kbps using V.34 protocols and operates on a 3.0 V to 3.6 V digital supply voltage with a typical current consumption of 17 mA. The device utilizes SPI or UART interfaces for host communication and requires a 4.915 MHz clock input frequency. Designed for embedded applications, it features an integrated Direct Access Arrangement (DAA) providing over 6000 V capacitive isolation. The component is housed in a 24-pin TSSOP package and supports commercial temperature ranges from 0°C to +70°C.

Feature Summary

• Integrated Direct Access Arrangement (DAA) eliminates the need for external transformers, relays, opto-isolators, and hybrid circuits.
• Supports global telephone line interface compliance with parallel phone detection and overcurrent protection capabilities.
• Firmware upgradeable architecture allows for protocol updates without hardware changes.
• Includes Type I and II caller ID decode functionality alongside DTMF detection and generation.

Applications

• Set-top boxes
• Point-of-sale terminals
• Text and video telephones
• Digital video recorders
• Remote monitoring systems

Procurement Notes

Verify the specific ordering suffix 'C' against official Skyworks documentation to confirm the exact temperature grade and packaging configuration. Ensure compatibility with the required Si3018/10 line-side device chipset combination as specified in the datasheet's ordering guide. Confirm that the 24-pin TSSOP package aligns with your PCB land pattern requirements before finalizing procurement.

Selection Notes

Select this model when V.34 protocol support at 33.6 kbps is sufficient for the application, rather than requiring V.90 speeds. Verify that the host system can provide the necessary 4.915 MHz clock signal or configure the device for alternative clocking options. Ensure the design accommodates the 24-pin TSSOP footprint and integrates the recommended external components listed in the bill of materials for optimal performance.

Part Context

This component belongs to the ISOmodem family, which provides complete modem solutions ranging from 2400 bps to 56 kbps. It functions as the system-side half of a chipset paired with the Si3018 or Si3010 line-side device. This integration significantly reduces the bill of materials by consolidating DSP, controller, codec, and analog interface functions into a single compact solution.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult the manufacturer's latest documentation for potential obsolescence notices or recommended upgrades within the ISOmodem product line.