XR16V564IJ

Overview

The XR16V564IJ is a quad universal asynchronous receiver/transmitter (UART) integrated circuit manufactured by MaxLinear, formerly Sipex. It provides four independent UART channels within a single package, supporting data rates up to 3 Mbps. The device operates on a single 3.3 V or 5 V power supply and features full hardware flow control via RTS/CTS signals. It includes built-in 14-byte FIFOs for each channel to enhance throughput and reduce CPU overhead during high-speed serial communication tasks.

Feature Summary

• Integrates four independent UART channels with full hardware flow control support
• Features 14-byte transmit and receive FIFOs per channel to minimize processor intervention
• Operates reliably on standard 3.3 V or 5 V single-supply voltage rails
• Supports baud rates up to 3 Mbps for high-speed serial data transmission

Applications

• Industrial automation systems requiring multiple serial connections
• Embedded computing platforms with limited I/O pin availability
• Telecommunications equipment utilizing RS-232 or RS-485 interfaces
• Point-of-sale terminals and payment processing devices

Procurement Notes

Verify the manufacturer designation carefully, as the component was originally produced by Sipex before being acquired by MaxLinear. Confirm that the specific suffix matches the required package type and temperature range. Check current availability status, as older revisions may be discontinued or subject to long lead times from authorized distributors.

Selection Notes

Select this component when a design requires four distinct serial ports without consuming excessive board space. Ensure the target system voltage aligns with the 3.3 V or 5 V operating range. Consider the FIFO depth requirements; if larger buffers are needed, evaluate alternative multi-channel controllers. Verify that the interface logic levels are compatible with the connected microcontroller or host processor.

Part Context

This part belongs to the XR16V56x series of quad UARTs, designed to replace legacy discrete UART solutions. It consolidates multiple serial interfaces into a compact form factor, simplifying PCB layout and reducing component count in complex embedded designs. The series is widely recognized for its compatibility with standard UART protocols and robust performance in noisy industrial environments.

Replacement Considerations

Direct substitutes include the XR16V564IM and XR16V564IV variants, which share identical functionality but differ in package style or temperature rating. Cross-reference with other quad UART ICs from manufacturers like NXP or Texas Instruments only if pin-to-pin compatibility is explicitly confirmed.