SC16C654BIA68,518

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C654BIA68,518 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 infrared encoder/decoder capabilities alongside standard modem interface controls.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

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

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed serial data communications systems
• Industrial equipment requiring multi-channel asynchronous connectivity
• Modem interface applications with hardware flow control requirements
• Infrared communication link implementations

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 the target system's voltage levels and interface mode selection requirements before integration.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component for designs requiring four independent UART channels with large buffer depths to reduce CPU overhead. Confirm that the PLCC68 package footprint matches the PCB layout and that the operating voltage aligns with the system power rails.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C654B/654DB family of quad UARTs. It is pin and software compatible with industry-standard devices such as the ST16C654 and TL16C754. The 'B' variant typically offers continuous interrupt enable modes on certain packages, while the 'DB' variant may differ in internal bonding configurations.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C654BIA68 is functionally equivalent to the ST16C654 and TL16C754. Verify pinout compatibility and register mapping when substituting with these parts.