XR16V554ILTR-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16V554ILTR-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 baud rates up to 16 Mbps 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 includes an internal oscillator, auto-flow control, and modem control signals, supporting both Intel and Motorola bus protocols for versatile system integration.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad channel architecture with dedicated 16-byte FIFOs per channel
• Internal oscillator eliminates need for external crystal components
• Supports automatic hardware flow control and modem control signals
• Compatible with Intel and Motorola bus timing protocols

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial connections
• Embedded computing platforms with limited GPIO resources
• Telecommunications equipment utilizing RS-232 or RS-485 interfaces
• Medical devices needing reliable serial communication links

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'LTR' indicates tape-and-reel packaging when sourcing. Confirm the manufacturer is MaxLinear, Inc., as Exar Corporation was previously associated with this product line. Ensure the operating temperature range meets application requirements. Check for RoHS compliance documentation. Validate pinout compatibility if replacing legacy components from other manufacturers.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent serial ports are required in a compact footprint. The 16-byte FIFOs are suitable for moderate data rates up to 16 Mbps. Consider the 2.25 V to 3.6 V supply range for low-voltage designs. Compare against single-channel alternatives if fewer ports suffice. Evaluate the QFN-48 package constraints for PCB layout thermal management.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR16V554 series of quad UARTs. It shares functional similarities with the XR16V554IL variant but differs in packaging format. The device is part of MaxLinear's VLIO UART family, designed for high-density serial I/O applications. It serves as a bridge between parallel processor buses and serial communication standards.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The XR16V554IL is a tray-packaged equivalent with identical electrical characteristics. Verify pin-to-pin compatibility before substitution. No direct cross-manufacturer replacements are publicly confirmed without additional datasheet analysis.