SI2438-B-GTR

Overview

The SI2438-B-GTR is a V.34 data ISOmodem system-side integrated circuit with voice support, manufactured by Skyworks Solutions Inc. It operates at a maximum data rate of 33.6 kb/s and utilizes SPI and UART interfaces. The device functions within a supply voltage range of 3.0 V to 3.6 V, consuming 17 mA during operation. Packaged in a 24-TSSOP format for surface mount installation, it supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Supports V.34 data transmission standards
• Integrates system-side modem functionality with voice capabilities
• Provides flexible connectivity via SPI and UART interfaces

Applications

• System-side communication modules requiring V.34 compliance
• Industrial equipment needing reliable serial data transmission
• Embedded systems integrating voice and data channels

Procurement Notes

Verify the specific suffix GTR indicates tape and reel packaging when sourcing components. Confirm that the 24-TSSOP package matches your PCB footprint requirements. Ensure compatibility with the specified 3.0 V to 3.6 V power supply rails. Check for moisture sensitivity labeling if storage conditions are critical. Validate that the manufacturer designation aligns with Skyworks Solutions Inc. specifications.

Selection Notes

Select this component for applications demanding standard V.34 data rates up to 33.6 kb/s. Consider the wide industrial temperature range for harsh environments. Evaluate the interface options against existing microcontroller capabilities. The integrated voice feature simplifies designs requiring dual-channel communication without additional discrete components.

Part Context

This part belongs to the SI2438 series of ISOmodems designed for robust data communication. It serves as a complete solution for system-side modem implementations. The series focuses on high integration to reduce board space and complexity. It targets markets requiring reliable serial connectivity over analog lines.

Replacement Considerations

The SI2439-A-FM offers similar V.34 capabilities but features a QFN-38 package instead of TSSOP-24. Verify pinout compatibility before substitution. The SI2438-B-GT provides identical electrical performance in a tube package variant.