XR16C854DCVTR-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16C854DCVTR-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 support high-speed data throughput up to 2 Mb/s. The device operates within a supply voltage range of 2.97 V to 5.5 V, supporting both 3.3 V and 5 V logic levels. It is housed in a 64-pin LQFP surface-mount package and is designed for industrial temperature ranges from 0°C to +70°C. The component supports Intel and Motorola bus interfaces 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
• Support for Intel and Motorola bus compatibility modes
• Integrated hardware flow control and modem management signals
• Dual voltage operation compatible with 3.3 V and 5 V systems

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation controllers requiring multiple serial communication ports
• Telecommunications equipment utilizing RS-232 or RS-485 interfaces
• Embedded systems needing high-throughput asynchronous data transfer
• Point-of-sale terminals and payment processing devices

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging distinct from tray versions. Confirm the DC variant corresponds to the commercial temperature range (0°C to +70°C) rather than the extended DIV industrial range (-40°C to +85°C). Check current lifecycle status as some XR16C854 variants are marked NRND. Ensure RoHS compliance documentation matches the specific manufacturing batch date code.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this part when four independent UART channels with large FIFO buffers are required in a compact LQFP-64 footprint. Choose the DCVTR variant over DIVTR if the application environment remains within commercial temperature limits. Verify that the 2 Mb/s maximum data rate meets system requirements compared to higher-speed VLIO alternatives like the XR16V654 series. Ensure power supply constraints align with the 2.97 V to 5.5 V operating window.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the XR16C854D family of enhanced UARTs, which are pin-compatible with legacy 16C850/16C854 designs but offer superior FIFO performance. The 'DCVTR' designation specifies the commercial temperature grade, LQFP-64 package, and tape-and-reel shipping format. It serves as a direct replacement for older UARTs in multi-port serial expansion applications where buffer depth reduces CPU overhead.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Publicly confirmed substitutes include the XR16C854DIVTR-F for extended temperature requirements and the XR16C854IJ-F for PLCC-68 packaging compatibility. Direct pin-for-pin replacements within the same package and temperature range may be limited due to the NRND status of certain legacy MaxLinear parts. Evaluate the XR16V654 series only if higher data rates are needed, noting the reduced FIFO size and different package options.