XR21B1411IL16-D2-F

Overview

The XR21B1411IL16-D2-F is a single-channel Full-Speed USB to UART bridge integrated circuit manufactured by MaxLinear. It operates within the XR21B1411 series and utilizes a QFN-16 surface-mount package. The device supports USB 2.0 standards with a data rate of 12 Mb/s. Electrical specifications include a minimum operating voltage of 4.4 V, a maximum of 5.25 V, and a typical operating current of 11 mA. The component functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides hardware flow control management for reliable serial communication
• Integrates dedicated transmit and receive FIFO buffers to reduce CPU overhead
• Supports standard UART signal lines including RTS, CTS, DTR, DSR, RI, and DCD

Applications

• Industrial automation systems requiring robust serial connectivity
• Embedded devices needing USB-to-UART conversion in compact form factors
• Test and measurement equipment interfaces

Procurement Notes

Verify the specific suffix 'D2' against official MaxLinear documentation to confirm pinout compatibility and electrical characteristics relative to the standard TR variant. Ensure the source document explicitly lists this suffix as a valid ordering code for the QFN-16 package before procurement.

Selection Notes

Select this component when a single-port USB-to-UART solution is required with Full-Speed performance. Compare FIFO depths and power consumption against the XR21V1410 series if lower voltage operation is needed. Confirm that the QFN-16 footprint matches the target PCB layout constraints.

Part Context

This part belongs to the XR21B1411 enhanced Full-Speed USB UART family. It serves as a bridge between USB host controllers and legacy UART peripherals. The series is designed to replace traditional RS-232 or RS-485 interface chips in modern USB-enabled systems.

Replacement Considerations

The XR21B1411IL16TR-F is a verified substitute within the same series offering identical functionality in the QFN-16 package. Verify that the TR suffix indicates tape-and-reel packaging rather than tray, ensuring mechanical compatibility.