XR16V2652IJ

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16V2652IJ is a dual universal asynchronous receiver/transmitter (DUART) integrated circuit manufactured by Sipex. It integrates two independent high-performance UART channels on a single chip, each featuring full hardware flow control and a 14-byte FIFO buffer for both transmit and receive operations. The device supports standard serial communication protocols including RS-232, RS-422, and RS-485. It operates with a wide supply voltage range and includes an internal oscillator that eliminates the need for external clock components. The unit is designed for applications requiring reliable serial data transmission in industrial and commercial environments.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent UART channels with dedicated hardware flow control signals
• Integrated 14-byte transmit and receive FIFO buffers to reduce CPU overhead
• Internal oscillator providing clock generation without external crystals
• Support for multiple serial interface standards including RS-232 and RS-485

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multi-port serial communication
• Point-of-sale (POS) terminals and payment systems
• Medical equipment with serial data logging capabilities
• Telecommunications infrastructure devices

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the manufacturer designation as Sipex or its successor entities when sourcing this component. Confirm the package type matches the required PCB footprint. Check for RoHS compliance status if environmental regulations apply to your assembly process. Ensure the operating temperature range meets your specific application requirements before finalizing procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when dual serial ports are needed within a single IC footprint to save board space. Consider the 14-byte FIFO depth for buffering requirements in high-throughput scenarios. Verify compatibility with the target system's voltage levels and interface standards. Evaluate the internal oscillator accuracy against the timing constraints of the connected peripherals.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR16V265x family of dual UARTs, which are widely used in embedded systems. Sipex was acquired by Exar Corporation, which later became part of Renesas Electronics. The component represents a legacy but still utilized solution for serial communication interfaces in established industrial designs.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Check for direct pin-compatible replacements from Renesas or other manufacturers offering dual UARTs with similar FIFO depths. Verify electrical specifications such as supply voltage and data rate limits. Ensure software drivers are available or compatible with the replacement part's register set.