SC16C554DBIB64,157

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C554DBIB64,157 is a quad Universal Asynchronous Receiver and Transmitter (QUART) manufactured by NXP Semiconductors. It operates at supply voltages of 5 V, 3.3 V, and 2.5 V with an industrial temperature range from -40 °C to +85 °C. The device supports data rates up to 5 Mbit/s at 5 V and 3.3 V, and up to 3 Mbit/s at 2.5 V. It features 16-byte transmit and receive FIFOs with four selectable interrupt trigger levels. The component utilizes an LQFP64 package and provides pin and software compatibility with industry-standard ST16C554D devices.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Four independent UART channels with 16-byte FIFOs for high-throughput serial communication
• Supports Intel 16-mode and Motorola 68-mode bus interfaces via the 16/68 pin
• Integrated hardware flow control with programmable auto-RTS and auto-CTS functions
• Continuous interrupt enable mode implemented through internal bonding on the LQFP64 package

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multi-channel serial connectivity
• Embedded controllers managing shared network environments
• High-speed modem interface applications

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance. Confirm that the continuous interrupt configuration matches the system design requirements for the LQFP64 variant. Ensure voltage levels align with the target operating conditions.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple asynchronous serial ports are required within a single integrated circuit. The LQFP64 package offers a compact footprint suitable for dense PCB layouts. Consider the 16/68 mode selection capability if interfacing with diverse microprocessor architectures.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C554B/554DB family of quad UARTs. The 'DB' designation indicates compatibility with the ST16C554D standard. The IB64 suffix specifies the LQFP64 plastic low profile quad flat package. This series serves as an upgrade to legacy 16C454 devices by adding FIFO buffers.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C554BIB64 is a compatible alternative within the same family. Verify that the INTSEL pin configuration meets the application's interrupt handling needs, as it differs between the B and DB variants.