SC16C550BIA44,518

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C550BIA44,518 is a Universal Asynchronous Receiver/Transmitter (UART) manufactured by NXP Semiconductors. It operates at supply voltages of 2.5 V, 3.3 V, or 5 V and supports industrial temperature ranges from -40 °C to +85 °C. The device features 16-byte transmit and receive FIFOs with programmable trigger levels. Data rates reach up to 3 Mbit/s at 5 V, 2 Mbit/s at 3.3 V, and 1 Mbit/s at 2.5 V. It utilizes a PLCC44 package and maintains pin compatibility with industry-standard ST16C550, TL16C550, and PC16C550 devices.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Supports 5 V, 3.3 V, and 2.5 V operation with industrial temperature range capability
• Includes 16-byte transmit and receive FIFOs with selectable interrupt trigger levels
• Provides automatic hardware flow control via auto-RTS and auto-CTS functions
• Features internal loopback mode for on-board diagnostics and fault isolation

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed modem interfaces requiring fast data processing
• Shared network environments demanding reduced CPU bandwidth
• Multi-channel serial communication systems

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and revision level. Ensure the component meets the required voltage and temperature specifications for the target application environment before finalizing procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this UART when system requirements include high throughput with minimal processor intervention. The integrated FIFOs and autoflow control reduce host interrupts. Confirm that the PLCC44 package fits the PCB layout constraints and that the interface logic matches the 16C450 register set for software compatibility.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the SC16C550B family of UARTs designed as an upgrade to the legacy 16C450 architecture. It provides enhanced performance through larger FIFO buffers while maintaining backward compatibility with existing generic software drivers and standard pinouts found in similar industry components.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C550BIA44 is pin-compatible with the ST16C550, TL16C550, and PC16C550. Verify that replacement units support the same voltage levels and FIFO configurations to ensure seamless integration without hardware modifications.