XR16C854CQ-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16C854CQ-F is a quad enhanced Universal Asynchronous Receiver/Transmitter (UART) interface integrated circuit manufactured by MaxLinear. It features four independent channels, each equipped with 128-byte transmit and receive FIFOs to improve data throughput and reduce CPU intervention. The device supports data rates up to 2 Mb/s and operates within a supply voltage range of 2.97 V to 5.5 V, compatible with both 3.3 V and 5 V systems. It is housed in a 100-lead QFP package suitable for surface mount applications. The component supports Intel and Motorola bus protocols and includes hardware flow control capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad channel architecture with dedicated 128-byte TX and RX FIFOs per channel
• Supports high-speed asynchronous serial communication up to 2 Mb/s
• Compatible with standard Intel and Motorola bus interfaces
• Integrated hardware flow control for reliable data transfer

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial connections
• Telecommunications equipment utilizing RS-232 or RS-485 interfaces
• Embedded computing platforms needing expanded UART ports
• Point-of-sale terminals and payment systems

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'CQ' against the official MaxLinear datasheet to confirm pinout compatibility and electrical characteristics. Check the current lifecycle status, as this part may be marked as Not Recommended for New Designs (NRND). Ensure that the 100-lead QFP footprint matches your PCB design constraints before ordering.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single IC must provide four independent UART channels with deep buffering. Compare against the XR16C854 series variants to determine if the specific package type (QFP vs LQFP) or temperature grade meets your system requirements. Consider power consumption differences between 3.3 V and 5 V operation modes during selection.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the MaxLinear VLIO UART family, specifically the XR16C854 series designed for multi-channel serial communication. It serves as a drop-in replacement for legacy 16C854 devices while offering enhanced FIFO depths. The series is widely used in applications requiring robust serial connectivity without complex external logic.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Direct pin-compatible substitutes within the same family include the XR16C854DIV-F and XR16C854DCV-F, though these utilize different packages (LQFP-64). Verify that the reduced pin count does not impact your existing board layout. Cross-reference with the XR16C864 series if higher channel counts are needed.