SC16C654BIA68,512

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C654BIA68,512 is a quad universal asynchronous receiver and 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 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 64-byte transmit and receive FIFOs with error flags, automatic hardware or software flow control, and infrared encoding/decoding capabilities. The component is housed in a PLCC68 package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture supporting Intel and Motorola interface modes
• 64-byte transmit and receive FIFOs with programmable interrupt trigger levels
• Automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control
• Integrated infrared encoder/decoder for IrDA compliance

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Multi-port serial communication systems requiring high throughput
• Industrial control networks operating in harsh environments
• Modem interface applications with standard modem control signals
• Infrared data exchange devices utilizing IrDA protocols

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental rating. Ensure compatibility with existing system voltage levels and bus interfaces before integration. Cross-reference pin assignments for the PLCC68 package to prevent wiring errors during PCB layout and assembly processes.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent serial channels are required on a single integrated circuit. The choice between 16-mode and 68-mode interface depends on the target microprocessor architecture. Consider the 64-byte FIFO depth to minimize CPU interrupt overhead compared to legacy 16-byte FIFO devices. Verify that the required baud rate generator clock frequency aligns with available crystal oscillators.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C654B/654DB family of quad UARTs. It is functionally equivalent to the ST16C654 and TL16C754, offering upward compatibility with 16C454/554 designs while providing enhanced FIFO performance. The PLCC68 package variant provides distinct interface mode selection pins not available in smaller footprint packages.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C654BIA68 is pin and software compatible with the ST16C654, TL16C754, and SC16C654DB variants. Verify that substitute components support the same 64-byte FIFO capacity and voltage ranges to maintain system performance specifications.