SI2404-C-FTR

Overview

The SI2404-C-FTR is a system-side component of the ISOmodem family, designed for embedded modem applications. It operates with a digital supply voltage (VD) ranging from 3.0 V to 3.6 V and supports ambient temperatures from 0 °C to 70 °C (F-grade). The device provides data rates up to 14.4 kbps using ITU-T V.32bis/V.32 protocols or Bell 212A/Bell 103 standards. It features an integrated Direct Access Arrangement (DAA) offering over 6000 V capacitive isolation and global line interface compliance. Communication with the host CPU is facilitated via UART, SPI, or parallel interfaces.

Feature Summary

• Integrated Direct Access Arrangement (DAA) providing programmable telephone line interface
• Supports standard AT command set and firmware upgrades
• Compatible with UART, SPI, or parallel host interfaces
• Includes Type I and II caller ID decode functionality

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 temperature grade and package configuration. Confirm availability status as older chipset revisions may be subject to discontinuation notices. Ensure compatibility with the required line-side device, such as the Si3018 or Si3010, for complete system operation.

Selection Notes

Select this model when a lower data rate capability than the Si2457 is sufficient for the application. Verify that the 14.4 kbps maximum speed meets the project requirements. Ensure the design utilizes the appropriate 24-pin TSSOP or 16-pin SOIC packaging option based on board space constraints.

Part Context

This component belongs to the ISOmodem family, which includes the Si2457, Si2434, and Si2415. These devices are sold as chipsets paired with line-side DAA components like the Si3018 or Si3010. The Si2404 represents the entry-level system-side option within this integrated modem architecture.

Replacement Considerations

Publicly confirmed substitutes include the Si2415-D-FT and Si2434-D-FT. Verify pinout and protocol support compatibility before substitution.