XR16V2550IL

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16V2550IL is a low voltage dual universal asynchronous receiver/transmitter (DUART) manufactured by Sipex. It integrates two independent UARTs with 16-byte transmit and receive FIFOs on a single chip, designed for operation from a single 3.3V power supply. The device supports data rates up to 3 Mbps and includes full modem control handshaking signals. It features an industry-standard pinout compatible with the Motorola MC16C554, facilitating easy upgrades from legacy components. The IC operates within a temperature range of -40°C to +85°C and is available in various package options including TSSOP-28.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent UART channels with integrated 16-byte FIFOs for both transmission and reception to reduce CPU overhead.
• Low voltage operation optimized for 3.3V systems while maintaining compatibility with 5V tolerant I/O interfaces.
• Full hardware modem control interface supporting RTS, CTS, DTR, DSR, RI, and DCD signals for complete flow management.
• High-speed serial communication capability supporting baud rates up to 3 Mbps with programmable data formats.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring reliable serial communication between controllers and peripherals.
• Embedded computing devices needing multiple serial ports for data logging or external module interfacing.
• Telecommunications equipment utilizing high-speed data transfer over standard serial protocols.
• Point-of-sale terminals and handheld devices where low power consumption and compact packaging are critical.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'IL' indicates the correct temperature grade and package type during sourcing. Confirm that the supplier provides original manufacturer documentation to ensure authenticity. Check for RoHS compliance status if required by your manufacturing standards. Ensure the ordering quantity matches the reel or tube specifications provided by the distributor. Validate lead times against current market availability as these components may have varying stock levels.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a design requires two independent serial ports in a small footprint. Compare against single UART solutions if only one channel is needed to optimize cost. Consider the 16-byte FIFO depth relative to your system's interrupt handling capabilities. Verify voltage level compatibility with the target microcontroller or processor interface. Evaluate package size constraints against available board space for the TSSOP-28 or other offered packages.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR16V2550 family of low voltage DUARTs. It serves as a drop-in replacement for older 5V DUARTs like the MC16C554. The series offers variations in package types and temperature ranges. It addresses the market demand for multi-port serial connectivity in portable and battery-operated electronics.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The XR16C2550 is a 5V equivalent counterpart. Verify voltage tolerance differences before substitution. Pinouts remain compatible, but power supply requirements differ significantly. Ensure signal levels match the receiving logic family when replacing with lower voltage variants.