XR16M654IJ68-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16M654IJ68-F is a quad Universal Asynchronous Receiver and Transmitter (UART) manufactured by MaxLinear. It features four independent channels, each equipped with 64-byte transmit and receive FIFOs. The device supports data rates up to 16 Mbps at a 4X sampling rate and operates on a supply voltage ranging from 1.62V to 3.63V. It includes automatic hardware and software flow control, an internal loopback capability for diagnostics, and selectable Intel or Motorola bus interfaces. The component is housed in a 68-pin PLCC package and functions within a temperature range of -40°C to +85°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with 64-byte FIFOs per channel
• Automatic hardware and software flow control
• Wireless Infrared (IrDA 1.0) encoder/decoder support
• Selectable Intel or Motorola data bus interface

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Telecommunication network routers
• Ethernet network routers
• Cellular data devices
• Factory automation and process controls

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature rating. Confirm availability status as distribution listings may indicate obsolete or limited stock conditions. Ensure the selected variant matches the required pinout and electrical specifications for the target design.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a quad UART solution with large FIFO buffers is required to reduce CPU interrupt overhead. Verify compatibility with the host processor's bus interface mode, either Intel or Motorola. Ensure the operating voltage and environmental temperature range align with the system requirements.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR16M654 series, which provides enhanced UART functionality compared to legacy 16C550 designs. The series offers increased performance through larger FIFOs and higher data rates. It is designed to be pin-to-pin compatible with industry standard parts like the ST16C554 and NXP SC16C654B.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The XR16M654IJ68-F is pin-compatible with the ST16C554, TI TL16C754B, and NXP SC16C654B. When substituting, verify that the replacement part supports the required 64-byte FIFO depth and 16 Mbps data rate capabilities.