SI2415-D-GTR

Overview

The Skyworks Solutions SI2415-D-GTR 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 data rates up to 14.4 kbps over PSTN. The device accommodates ITU-T V.90, V.34, V.32bis, V.32, V.29, V.22, V.22bis, V.23, V.21, Bell 212A, and Bell 103 protocols. It features UART, SPI, or parallel host interfaces and integrates a direct access arrangement (DAA). Available in a 24-pin TSSOP package, it supports flexible clocking options including 32.768 kHz, 4.915 MHz, and 27 MHz inputs.

Feature Summary

• Integrated Direct Access Arrangement (DAA) providing global telephone line interface compliance
• Supports multiple host communication protocols including UART, SPI, and parallel interfaces
• Capable of automatic rate negotiation and fast connect functionality
• Firmware upgradeable via EEPROM interface without external memory requirements

Applications

• Set-top boxes
• Point-of-sale terminals
• Text and video telephones
• Digital video recorders
• Remote monitoring systems

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm compatibility with the paired Si3018/10 line-side device as the datasheet validity depends on listed chipset combinations. Ensure the procurement channel provides genuine Skyworks components to maintain reliability standards.

Selection Notes

Select the SI2415 variant when maximum data rates up to 14.4 kbps are sufficient for the application. Choose this model over higher-speed variants like the Si2457 if cost optimization is prioritized. Verify that the 24-pin TSSOP footprint aligns with the PCB layout constraints and that the host processor supports the desired interface mode.

Part Context

The SI2415 belongs to the ISOmodem family, which includes the Si2457, Si2434, and Si2404. These devices function as the system-side half of a complete modem solution when paired with the Si3018 or Si3010 line-side devices. This architecture eliminates the need for separate DSPs, codecs, and transformers.

Replacement Considerations

The Si2434 offers support up to 33.6 kbps. The Si2457 supports speeds up to 56 kbps. The Si2404 is an alternative within the same family. Verify pinout and protocol support compatibility before substituting.