SI2404-D-FT

Overview

The SI2404-D-FT 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 56 kbps using ITU-T V.90 protocols, alongside support for V.34 and lower standards. It features an integrated Direct Access Arrangement (DAA) offering over 6000 V capacitive isolation. Communication interfaces include UART, SPI, or parallel modes. The component utilizes flexible clocking options such as a 32.768 kHz oscillator, a 4.9152 MHz oscillator, or a 27 MHz clock input.

Feature Summary

• Integrated direct access arrangement (DAA) technology providing global telephone line interface compliance
• Supports standard AT command sets and firmware upgrades via EEPROM interface
• Includes Type I and II caller ID decode capabilities and DTMF detection/generation
• Eliminates external DSP, codec, transformer, and hybrid requirements through high integration

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 against official Skyworks documentation to confirm package type and temperature grade. Confirm availability status as product lifecycles may change. Ensure compatibility with the paired Si3018 line-side device for complete chipset functionality. Check for any recent Product Change Notices regarding manufacturing location or material composition updates.

Selection Notes

Select this model when a compact system-side solution is required for PSTN connectivity. Verify that the host processor supports the desired interface mode (UART, SPI, or Parallel). Ensure the application environment falls within the specified F-grade temperature range. Confirm power supply stability within the 3.0 V to 3.6 V window to maintain signal integrity and protocol compliance.

Part Context

This component belongs to the ISOmodem family, which pairs with line-side devices like the Si3018. It serves as the system-side processing unit, handling modulation, demodulation, and protocol execution. The 'D' revision indicates specific electrical and functional updates compared to earlier versions. It is part of a chipset architecture designed to minimize external bill of materials.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided datasheet. Consult Skyworks Solutions directly for current alternative recommendations or updated revisions within the ISOmodem family.