SC16C654BIA68,529

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C654BIA68,529 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 programmable interrupt trigger levels. The component is housed in a PLCC68 package with 68 leads and includes automatic hardware or software flow control, infrared encoding/decoding capabilities, and internal loop-back diagnostics.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

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

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed serial data communications systems
• Industrial equipment requiring multi-channel asynchronous interfaces
• Modem interface applications with hardware flow control requirements

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and electrical specifications. Ensure compatibility with system voltage levels and interface mode requirements before integration. Cross-reference pin assignments with the official datasheet to validate board layout alignment.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent serial channels are required on a single integrated circuit. Consider the PLCC68 package availability and pin configuration relative to the target microprocessor bus interface. Evaluate power consumption requirements across the supported voltage ranges and operating temperatures.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This QUART device is part of the SC16C654B/654DB series, designed as an upgrade to legacy 16C454 and 16C554 UARTs. It provides enhanced performance through larger FIFO buffers and additional control features while maintaining backward compatibility with standard register programming models for easier migration.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C654B is pin and software compatible with the ST16C654 and TL16C754. Verify that substitute components support the same 64-byte FIFO depth and interface modes to ensure functional equivalence without redesigning the host system logic.