SC16C554BIBS,557

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C554BIBS,557 is a quad Universal Asynchronous Receiver/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 of −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 provides both Intel (16 mode) and Motorola (68 mode) interface compatibility and includes automatic hardware flow control via programmable auto-RTS and auto-CTS functions.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture supporting serial data communications with parallel-to-serial conversion capabilities.
• Dual bus interface compatibility allowing selection between Intel (16 mode) and Motorola (68 mode) protocols.
• Integrated 16-byte transmit and receive FIFOs designed to reduce external CPU bandwidth requirements.
• Automatic hardware flow control utilizing programmable auto-RTS and auto-CTS mechanisms.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed modem interfaces requiring fast data processing times.
• Shared network environments demanding multi-channel serial communication.
• Industrial systems operating within the specified voltage and temperature ranges.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and pin configuration. Ensure that the selected variant matches the required interface mode and thermal specifications for the target application environment.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent serial channels are required on a single integrated circuit. Consider the HVQFN48 package constraints where channel D lacks modem pins and TXRDY/RXRDY signals are unavailable. Verify power supply requirements align with the supported 2.5 V, 3.3 V, or 5 V operation modes.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C554B/554DB family of quad UARTs. It is pin and software compatible with industry-standard devices such as the ST16C554 and TL16C554. The device powers up to be functionally equivalent to the 16C454, ensuring backward compatibility while offering enhanced FIFO capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Public confirmed substitutes include SC16C554BIB64, SC16C554BIB80, and SC16C554BIBM. These variants share identical electrical characteristics but differ in physical package dimensions and lead counts.