XR16L2551IL

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR16L2551IL is a dual universal asynchronous receiver/transmitter (DUART) manufactured by Sipex. It integrates two independent UART channels with 16-byte transmit and receive FIFOs on a single CMOS chip. The device operates from a single 3.3V or 5V supply and supports data rates up to 3 Mbps. Key electrical specifications include an operating voltage range of 3.0V to 5.5V, a maximum data rate of 3,000,000 bps, and a supply current of 40 mA per channel at 1 MHz. The functional block includes baud rate generators, modem control interfaces, and interrupt logic.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent UART channels with integrated 16-byte FIFOs for each transmitter and receiver
• Full hardware modem interface supporting all RS-232 handshake signals
• Programmable baud rate generators compatible with standard communication protocols

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial control systems requiring serial communication
• Point-of-sale terminals and embedded computing devices
• Telecommunications equipment utilizing multi-channel serial links

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific manufacturer source document for the XR16L2551IL to confirm exact pinout configurations and absolute maximum ratings. Ensure compatibility with system voltage levels before integration. Cross-reference official datasheets for thermal dissipation requirements in surface-mount packages.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when dual serial ports are required within a compact footprint. The integrated FIFOs reduce CPU overhead compared to older UART designs. Verify that the target application requires the specific 16-byte buffer depth and 3 Mbps speed capability offered by this model.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the Sipex XR16L255x series of DUARTs. It serves as a high-performance alternative to discrete UART solutions, consolidating two complete serial interfaces into one package. The series is designed for applications needing multiple asynchronous serial connections without increasing board space significantly.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Check for direct pin-compatible replacements such as the MAX3232 family if level shifting is also required, though functionally distinct. Verify if the XR16C2550 single-UART variant suffices if only one channel is needed.