SI2435-D2-FTR

Modems - ICS And Modules Overview

The SI2435-D2-FTR is a V.34 fax modem IC from the ISOmodem family, manufactured by Skyworks Solutions Inc. It operates on a 3.0 to 3.6 V digital supply and supports data rates up to 33,600 bps over PSTN lines. The device integrates a DSP, modem controller, codec, and direct access arrangement (DAA) within a 24-pin TSSOP package. It features UART or parallel interfaces, caller ID detection, DTMF generation, and global line interface compliance.

Modems - ICS And Modules Feature Summary

• Integrated Direct Access Arrangement (DAA) for global telephone line connectivity
• Supports V.34 half duplex fax protocols with automatic rate negotiation
• Includes built-in Caller ID decoding and DTMF tone generation/detection
• Configurable via standard AT commands for Class 1 fax operations

Modems - ICS And Modules Applications

• Fax machines
• Fax telephones
• Multifunctional printers
• Fax servers

Modems - ICS And Modules Procurement Notes

Verify the specific suffix against official documentation to confirm tape-and-reel packaging and temperature grade. Ensure compatibility with the Si3018 silicon DAA component for complete system functionality. Confirm RoHS compliance status through manufacturer datasheets prior to integration.

Modems - ICS And Modules Selection Notes

Select this model for applications requiring integrated fax modem capabilities without external DSPs. Verify interface requirements, as the device supports both serial UART and parallel modes. Ensure the host microcontroller can handle the required baud rates and AT command sets for proper initialization and control.

Modems - ICS And Modules Part Context

This component belongs to the ISOmodem chipset family designed for compact fax solutions. It replaces traditional discrete components such as isolation transformers, relays, and separate codecs. The chipset architecture allows for minimal external component count while maintaining full ITU-T compliance for global fax transmission standards.

Modems - ICS And Modules Replacement Considerations

Public confirmed substitute part numbers: SI2435-E-FT, SI2435-D3-FT.