XR16C864CQ-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16C864CQ-F is a quad enhanced 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 transfer 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 QFP-100 surface-mount package and functions within an operating temperature range of 0°C to +70°C. The component draws between 3 mA and 6 mA during operation.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad channel architecture with dedicated 128-byte FIFOs for each transmitter and receiver
• Supports Intel and Motorola bus protocols for flexible system integration
• Enhanced UART functionality with internal oscillator and automatic flow control

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial communication systems requiring multiple serial ports
• Embedded controllers needing high-throughput serial data handling
• Telecommunications equipment utilizing RS-232 or RS-485 interfaces

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the current lifecycle status before procurement, as this component is marked as Not Recommended for New Designs (NRND). Confirm availability through authorized distributors, noting that stock may be limited. Ensure the QFP-100 package and specific suffix match your board design requirements. Check for moisture sensitivity labels if storage conditions have been compromised.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this part when a single IC must provide four independent UART channels with deep buffering capabilities. The 128-byte FIFOs are suitable for applications with bursty data traffic or varying baud rates. Ensure the host system supports either Intel or Motorola bus modes. Verify that the 0°C to +70°C commercial temperature range meets the environmental constraints of the final assembly.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the XR16C864 series of VLIO UARTs from MaxLinear. It serves as a multi-port serial interface solution, distinct from single-channel variants like the XR16L788 or older generations like the XR82C684. The series is designed to replace legacy UART chips while offering improved FIFO depths and lower power consumption.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is marked NRND, engineers should consult MaxLinear for recommended obsolescence alternatives or evaluate similar quad UART devices from other manufacturers with compatible pinouts and electrical specifications.