SC16C554DBIA68,518

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C554DBIA68,518 is a quad Universal Asynchronous Receiver/Transmitter (QUART) manufactured by NXP USA Inc. It operates at supply voltages of 5 V, 3.3 V, and 2.5 V within an industrial temperature range of −40 °C to +85 °C. The device supports serial 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 provides both Intel (16 mode) and Motorola (68 mode) interface compatibility and includes automatic hardware flow control via programmable auto-RTS and auto-CTS.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Supports dual bus interface modes for Intel and Motorola microprocessors
• Includes 16-byte transmit and receive FIFOs with error flags
• Provides automatic hardware flow control through programmable auto-RTS and auto-CTS
• Features internal loopback capability for on-board diagnostics

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial data communications in industrial environments
• High-speed modem interfaces requiring fast data processing
• Shared network environments needing reduced CPU bandwidth

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and operational characteristics. Ensure that any assumed functional differences based solely on suffix variations are validated by the manufacturer's datasheet before implementation.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a quad UART solution with integrated FIFOs is required for multi-channel serial communication. Consider the PLCC68 package availability and verify compatibility with either Intel or Motorola bus architectures depending on the target system design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C554B/554DB family of quad UARTs. It is designed as an upward solution compared to the 16C454, offering enhanced performance through larger FIFOs and multiple interrupt trigger levels while maintaining downward compatibility with standard 16-series devices upon reset.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C554DBIA68 is pin and software compatible with the ST16C554D. It also maintains pin and software compatibility with the ST16C454/554, ST68C454/554, ST16C554, and TL16C554.