XR16M654DIV64-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16M654DIV64-F is a quad Universal Asynchronous Receiver and Transmitter (UART) integrated circuit 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 within a supply voltage range of 1.62V to 3.63V. It includes automatic hardware and software flow control, IrDA encoder/decoder capabilities, and an internal loopback function. The component is housed in a 64-pin LQFP package and provides continuous interrupt output functionality.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with 64-byte transmit and receive FIFOs per channel
• Support for Intel and Motorola bus interfaces via selectable mode pin
• Automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control mechanisms
• Integrated Wireless Infrared (IrDA 1.0) encoder and decoder

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 official manufacturer documentation to confirm package type and temperature range. Confirm that the 'DIV' designation corresponds to the continuous interrupt output mode as defined in the datasheet. Ensure compatibility with the target system's voltage levels and interface requirements before procurement.

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. The 64-pin LQFP package is suitable for surface mount applications requiring multiple serial interfaces. Consider the continuous interrupt feature if software-controlled interrupt enabling is not desired in the design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR16M654D series, which offers enhanced performance over standard 16C550 UARTs through larger FIFOs and higher data rates. The 'DIV' suffix specifically denotes the version with internally bonded INTSEL pin for continuous interrupts, distinguishing it from the 'IV' variant which requires software configuration for interrupt behavior.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The XR16M654DIV64-F is pin-to-pin compatible with ST16C554, TI TL16C754B, and NXP SC16C654B. Verify that replacement parts support the same 64-byte FIFO depth and 1.62V-3.63V operating voltage range to ensure functional equivalence.