XR21B1411IL16-E2-F

Overview

The XR21B1411IL16-E2-F is an enhanced Universal Asynchronous Receiver and Transmitter (UART) with a USB interface compliant with the Full-Speed USB 2.0 specification, supporting a data transfer rate of 12 Mbps. It operates from a single 5V power supply within a voltage range of 4.4V to 5.25V and consumes 11 mA of operating current. The device features a 128-byte transmit FIFO and a 384-byte receive FIFO. It utilizes an internal programmable clock ranging from 6 MHz to 48 MHz, eliminating the need for external crystals. The component is housed in a 16-pin QFN package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Supports automatic transceiver direction control for half-duplex RS-485 applications
• Includes on-board OTP for programming Vendor ID, Product ID, and default baud rates
• Provides fractional baud rate generator for accurate baud rate generation up to 12 Mbps
• Features ±15kV HBM ESD protection on USB differential data pins

Applications

• Portable Appliances
• External Converters (dongles)
• Battery-Operated Devices
• Cellular Data Devices
• Factory Automation and Process Controls

Procurement Notes

Verify the specific ordering suffix against official MaxLinear documentation to confirm packaging method and environmental ratings. Ensure compatibility with required Windows or Linux drivers before procurement. Confirm that the OTP configuration meets project requirements as it cannot be altered after programming.

Selection Notes

Select this component when a single-channel USB-to-UART bridge is required with large FIFO buffers to optimize throughput. It is suitable for designs needing internal clocking to reduce BOM complexity. Consider the 16-pin QFN package constraints and thermal pad requirements for PCB layout.

Part Context

This part belongs to the XR21B1411 series of enhanced full-speed USB UARTs manufactured by MaxLinear. It serves as a direct replacement for previous generation UARTs that required external oscillators. The series includes variants with different packaging options such as tape and reel or tray formats.

Replacement Considerations

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