XR16V554IL-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16V554IL-F is a quad universal asynchronous receiver/transmitter (UART) interface integrated circuit manufactured by MaxLinear. It features four independent UART channels, each equipped with 16-byte transmit and receive FIFOs to enhance data throughput and reduce CPU overhead. The device supports data rates up to 4 Mb/s and operates within a supply voltage range of 2.25 V to 3.6 V. It is housed in a 48-lead QFN package measuring 7 mm x 7 mm with a 0.50 mm pitch. The component is designed for industrial temperature ranges, functioning reliably between -40°C and +85°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad-channel architecture providing four independent serial communication interfaces
• Integrated 16-byte transmit and receive FIFOs per channel for efficient data buffering
• Supports high-speed data transmission rates up to 4 Mb/s
• Compatible with Intel bus mode for simplified system integration

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial connections
• Embedded control units with limited CPU resources
• Communication gateways utilizing RS-232 or RS-422 protocols
• Data acquisition modules needing reliable serial I/O

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the manufacturer designation on official documentation, as the part may be listed under Exar Corporation due to historical corporate acquisitions. Confirm the specific package variant matches the required PCB footprint, as suffixes indicate different packaging options. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference the datasheet revision to confirm pinout compatibility before finalizing procurement orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple serial ports are needed within a compact form factor. The 16-byte FIFO depth is suitable for applications with moderate burst traffic but may require external buffering for high-throughput scenarios. Verify that the operating voltage range aligns with the system's power rails. Consider the thermal performance of the QFN package relative to the ambient environment and board layout constraints.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR16V554D series of quad UART controllers. It serves as a legacy interface solution often found in designs originally developed during the Exar era. The device provides a cost-effective alternative to discrete UART implementations, consolidating four channels into a single IC to save board space and simplify routing compared to using individual single-channel UART chips.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The XR16V554DIV-F is a documented equivalent offering identical functional specifications but packaged in a 64-lead LQFP format. Designers must account for the physical size difference and pinout variations when substituting these parts. Other members of the VLIO UART family may offer similar features but require verification of FIFO depths and package compatibility.