SC16C550BIA44,512

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C550BIA44,512 is a Universal Asynchronous Receiver and Transmitter (UART) manufactured by NXP USA Inc. It operates at supply voltages of 5 V, 3.3 V, or 2.5 V within an industrial temperature range of -40 °C to +85 °C. The device features 16-byte transmit and receive FIFOs with selectable interrupt trigger levels. It supports serial data rates up to 3 Mbit/s at 5 V, 2 Mbit/s at 3.3 V, and 1 Mbit/s at 2.5 V. The component utilizes a PLCC44 package and provides pin compatibility with industry-standard ST16C550, TL16C550, and PC16C550 devices.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Provides 16-byte transmit and receive FIFOs with programmable trigger levels for optimized data throughput.
• Supports automatic hardware flow control through auto-RTS and auto-CTS modes to prevent overrun errors.
• Features internal loopback capability for on-board diagnostics and fault isolation.
• Includes standard modem interface signals and prioritized interrupt system controls.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial data communication systems requiring parallel-to-serial conversion
• High-speed modem interfaces operating at data rates up to 3 Mbit/s
• Shared network environments needing fast data processing and reduced CPU bandwidth

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and voltage specifications. Ensure the procurement channel sources components directly from authorized distributors to maintain quality standards. Confirm that the delivered units match the exact part number designation required for the design implementation.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this UART when pin compatibility with legacy 16C450 software and hardware is required alongside enhanced FIFO performance. Consider the PLCC44 package constraints and verify that the target application operates within the specified industrial temperature range. Evaluate the need for DMA signaling capabilities, noting that these functions are not supported in alternative package types.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the SC16C550B family of UARTs designed for serial communications. It serves as an upward solution to the 16C450 by adding 16-byte FIFO memory to reduce external processor interrupts. The device is fabricated using advanced CMOS technology to achieve low power consumption while maintaining high-speed operation capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C550B is functionally equivalent to the 16C450 after reset. It maintains pin compatibility with the ST16C550, TL16C550, and PC16C550. These devices can serve as direct replacements if the application requires identical register sets and physical footprint without the FIFO enhancements.