XR21B1411ILTR-E2-F

Overview

The XR21B1411ILTR-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 and features an internal programmable clock ranging from 6 MHz to 48 MHz, eliminating the need for external crystals. The device includes a 128-byte transmit FIFO and a 384-byte receive FIFO to optimize throughput. It supports baud rates up to 12 Mbps via a fractional baud rate generator and offers automatic transceiver direction control for half-duplex RS-485 applications. The component is housed in a 16-pin QFN package.

Feature Summary

• Integrated internal programmable oscillator operating between 6 MHz and 48 MHz
• Supports USB suspend, resume, and remote wakeup operations
• Includes automatic hardware flow control and auto RS-485 half-duplex control
• Features on-chip one-time programmable memory for configuration

Applications

• Portable appliances
• External converters and dongles
• Battery-operated devices
• Cellular data devices
• Factory automation and process controls

Procurement Notes

Verify that the specific suffix E2 corresponds to the intended packaging or revision requirements by consulting the manufacturer's official ordering guide. Confirm that the lead-free status and environmental ratings align with project specifications before finalizing procurement orders.

Selection Notes

Select this component when a compact solution for converting USB signals to UART is required without external oscillators. Ensure the design accommodates the 16-pin QFN package and provides adequate thermal grounding for the center pad. Verify that the host system supports the necessary Windows or Linux drivers for operation.

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 requiring external crystals, offering improved integration and reduced board space through its internal clocking architecture.

Replacement Considerations

The XR21B1411IL16TR-F is a verified alternative within the same series offering identical functionality in a tape and reel packaging format.