SC16C550BIBS,157

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C550BIBS,157 is a Universal Asynchronous Receiver and Transmitter (UART) manufactured by NXP Semiconductors. It operates at supply voltages of 2.5 V, 3.3 V, or 5 V with an industrial temperature range of -40 °C to +85 °C. The device features 16-byte transmit and receive FIFOs, supporting 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. It utilizes an HVQFN32 package with 32 terminals.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Pin compatible with industry-standard ST16C450/550, TL16C450/550, and PC16C450/550 devices.
• Includes programmable auto-RTS and auto-CTS for automatic hardware flow control.
• Provides four selectable Receive FIFO interrupt trigger levels for optimized data throughput.
• Supports internal loopback capability for on-board diagnostics and fault isolation.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial data communications in industrial environments requiring robust interface capabilities.
• High-speed modem connections utilizing data compression schemes.
• Shared network environments requiring fast data processing and reduced CPU interrupt load.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Confirm RoHS compliance status as required for your assembly process. Ensure the component meets the specified industrial temperature range requirements for your application environment before finalizing procurement.

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 HVQFN32 package constraints, specifically that DMA signaling via TXRDY and RXRDY pins is not supported in this package variant compared to other available packages.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the SC16C550B series of 5 V, 3.3 V, and 2.5 V UARTs with 16-byte FIFOs. It serves as an upward solution to the 16C450, offering increased performance through larger buffers while maintaining functional equivalence after reset. The series supports various packages including PLCC44, LQFP48, DIP40, and HVQFN32.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C550B is functionally equivalent to the 16C450 upon power-up. Pin-compatible replacements include the ST16C550, TL16C550, and PC16C550. Verify register set compatibility if migrating from older UART designs.