SI2434-C-FSR

Overview

The SI2434-C-FSR is a system-side ISOmodem network controller and processor IC manufactured by Skyworks Solutions. It supports data rates up to 33.6 kbps using V.34 modulation protocols over the PSTN. The device operates on a 3.0 V to 3.6 V digital supply voltage with a typical current consumption of 17 mA at 25 °C. It features UART, SPI, or parallel host interfaces and utilizes a 4.9152 MHz default clock input frequency. The component is housed in a 16-pin SOIC package and is rated for commercial operation within a temperature range of 0 °C to +70 °C.

Feature Summary

• Integrated direct access arrangement (DAA) providing global telephone line interface compliance
• Supports ITU-T V.34 protocol with automatic rate negotiation capabilities
• Firmware upgradeable architecture eliminating the need for external ROM or RAM
• Compatible with standard AT command sets for host control

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 the manufacturer's official documentation to confirm pinout compatibility and packaging type. Confirm that the F-grade temperature rating aligns with the target application environment requirements before finalizing procurement decisions.

Selection Notes

Select this model when V.90 speeds are not required but V.34 performance is necessary. Ensure the design accommodates the paired Si3018/10 line-side DAA device. Verify that the host interface configuration matches the available UART, SPI, or parallel bus options supported by the microcontroller.

Part Context

This component belongs to the ISOmodem family designed as a complete embedded modem solution. It functions as the system-side chipset element, working in conjunction with a separate line-side device to provide full modem functionality without requiring external DSPs or codecs.

Replacement Considerations

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