SI2457-C-FTR

Overview

The SI2457-C-FTR is a system-side network controller and processor IC from the ISOmodem family, designed for embedded modem applications. It supports data rates up to 56 kbps using V.90 protocols and operates with a 3.3 V supply voltage (3.0 V to 3.6 V range). The device features an integrated Direct Access Arrangement (DAA) providing over 6000 V capacitive isolation. It communicates via SPI or UART interfaces and utilizes a 4.915 MHz clock frequency. The component is housed in a 16-pin SOIC package and is manufactured by Skyworks Solutions Inc.

Feature Summary

• Integrated Direct Access Arrangement (DAA) eliminates external transformers and opto-isolators
• Supports global telephone line interface requirements with programmable parameters
• Compatible with standard AT command sets for host control
• Firmware upgradeable via EEPROM interface

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 'FTR' against official Skyworks documentation to confirm tape-and-reel packaging availability. Confirm that the '-C-' designation aligns with the required temperature grade and RoHS compliance status for your target market. Ensure the chipset combination with the Si3018 line-side device is validated for your specific application design.

Selection Notes

Select this model when a 16-pin surface-mount package is preferred over the 24-pin TSSOP option. Verify that the host system can support the required SPI or UART interface timing specifications. Ensure the application environment falls within the specified operating temperature range for the F-grade variant. Check compatibility with the intended line-side DAA component.

Part Context

This component belongs to the ISOmodem family of products, which includes the Si2457, Si2434, Si2415, and Si2404 system-side devices. These chips are designed to work as a chipset with the Si3018/10 line-side device. The family provides a complete modem solution ranging from 2400 bps to 56 kbps with minimal external component count.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Skyworks Solutions directly for current replacement recommendations or updated product lines.