XR20M1280IL40TR-F

Overview

The XR20M1280IL40TR-F is a single-channel UART interface integrated circuit manufactured by MaxLinear. It features an I2C/SPI serial interface for host control and includes integrated level shifters to support mixed-voltage systems. The device provides a 128-byte transmit and receive FIFO buffer to minimize CPU intervention during data transfers. It operates within a supply voltage range of 1.62 V to 3.63 V and supports data rates up to 24 Mb/s. The component is housed in a QFN-40 package suitable for surface-mount assembly.

Feature Summary

• Integrated level shifters enable direct interfacing between low-voltage logic and higher-voltage RS-232 or RS-485 transceivers without external components.
• High-speed serial control via I2C or SPI interfaces allows efficient configuration and status monitoring with minimal pin count.
• Large 128-byte dual FIFO buffers reduce processor load by storing multiple bytes of data before and after transmission.

Applications

• Industrial automation systems requiring robust serial communication over long distances
• Smart metering infrastructure utilizing mixed-voltage sensor networks
• Building management controllers integrating legacy RS-232 devices with modern microcontrollers

Procurement Notes

Verify the specific suffix IL40 against official MaxLinear documentation to confirm the QFN-40 package variant and temperature grade. Confirm end-of-life status through authorized distributors, as discontinuation notices may affect long-term availability. Ensure compliance with RoHS directives if required for your region.

Selection Notes

Select this component when a single UART channel with high throughput and integrated voltage translation is required. Compare against the XR20M1280IG24 variant if a smaller QFN-24 package is preferred, noting the reduced pin count. Verify that the 128-byte FIFO depth meets the burst transmission requirements of the target application.

Part Context

This part belongs to the XR20M1280 series of I2C/SPI UARTs featuring integrated level shifters. It complements other variants like the XR20M1172 dual-channel model and the XR16M890 series. The series is designed to simplify board layouts by eliminating external level-shifting transistors typically needed for mixed-voltage serial links.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult MaxLinear technical support for current obsolescence management options or recommended cross-references based on specific electrical constraints.