SI2493-C-FT

Overview

The SI2493-C-FT is a system-side ISOmodem device manufactured by Skyworks Solutions Inc. It operates within a 3V to 3.6V supply voltage range and utilizes a 24-pin TSSOP package with a width of 4.40mm. The component supports data formats including V.21, V.22, V.23, V.29, V.32, V.34, V.90, V.92, Bell 103, and Bell 212A. It interfaces with host processors via UART, parallel, or SPI connections. The device incorporates on-chip program memory for register settings and firmware, eliminating the need for external storage in standard configurations.

Feature Summary

• Integrated hardware modem controller with built-in DSP capabilities
• Supports multiple communication protocols and data transmission standards
• Provides isolation through high-voltage capacitors compliant with global telecommunications standards
• Includes programmable AC/DC termination and ring impedance control

Applications

• Telephone answering machines (TAM)
• Electronic point-of-sale (EPOS) terminals
• Fax machines and modems
• Voice messaging systems

Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm interface configuration and package type. Ensure compatibility with required country-specific regulatory certifications before procurement. Confirm availability status as distribution channels may vary.

Selection Notes

Select this model for applications requiring a complete hardware-based modem solution with integrated line-side isolation. Consider the available interface options (UART, Parallel, SPI) when designing the host processor connection. Verify that the 24-pin TSSOP package dimensions fit the target PCB layout constraints.

Part Context

This component belongs to the ISOmodem chipset family designed for low-voltage telephone line applications. It pairs with line-side DAA devices like the Si3018 to form a complete modem solution. The series is engineered to replace traditional transformer-based isolation methods with capacitor technology.

Replacement Considerations

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