SI2435-D3-FT

Modems - ICS And Modules Overview

The SI2435-D3-FT is a system-side component of the ISOmodem chipset, functioning as a V.34 fax modem integrated circuit manufactured by Skyworks Solutions Inc. It operates within a digital supply voltage range of 3.0 to 3.6 V and supports data rates up to 33,600 bps over the Public Switched Telephone Network (PSTN). The device utilizes a 24-pin Thin Shrink Small Outline Package (TSSOP) with a width of 4.40 mm. It features an integrated Direct Access Arrangement (DAA), eliminating the need for external isolation transformers or relays. The chipset supports ITU-T V.34 protocols and includes firmware-upgradable capabilities.

Modems - ICS And Modules Feature Summary

• Integrated silicon Direct Access Arrangement (DAA) providing global telephone line interface compliance without external discrete components
• Supports V.34 half-duplex fax communication with automatic rate negotiation and super G3 fax capabilities
• Includes built-in caller ID decoding for multiple international standards and distinctive ring detection
• Offers flexible digital connectivity through selectable UART serial or 8-bit parallel interfaces

Modems - ICS And Modules Applications

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

Modems - ICS And Modules Procurement Notes

Verify the manufacturer part number against official Skyworks documentation to confirm the specific D3 suffix designation. Ensure compatibility with the required Si3018 companion chip for complete functionality. Confirm package type and moisture sensitivity level requirements prior to ordering.

Modems - ICS And Modules Selection Notes

Select this component for applications requiring a compact, globally compliant fax modem solution. Verify that the host microcontroller supports either the UART or parallel interface modes. Ensure the design accommodates the necessary clocking configuration using either a crystal or master clock input.

Modems - ICS And Modules Part Context

This component belongs to the ISOmodem family developed originally by Silicon Laboratories and later acquired by Skyworks Solutions. It is designed as a two-chip solution, typically paired with the Si3018 DAA chip to provide a complete fax modem implementation. The series is known for its high integration and minimal external component count.

Modems - ICS And Modules Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.