SC16C654IA68,512

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C654IA68,512 is a quad Universal Asynchronous Receiver and Transmitter (QUART) manufactured by NXP USA Inc. It features 64-byte transmit and receive FIFOs with error flags, supporting data rates up to 5 Mbits/s at 5 V and 3.3 V, and 3 Mbits/s at 2.5 V. The device operates within an industrial temperature range and supports 5 V, 3.3 V, and 2.5 V power supplies. It includes automatic hardware or software flow control, infrared encoder/decoder capabilities, and sleep mode. The component is housed in a PLCC68 plastic leaded chip carrier package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with 64-byte transmit and receive FIFOs for reduced CPU overhead
• Dual interface compatibility selectable between Intel-style 16-bit and Motorola-style 68-bit bus modes
• Integrated infrared (IrDA) encoder and decoder functionality alongside standard modem interface controls
• Programmable baud rate generator supporting data rates up to 5 Mbits/s

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed serial communication interfaces requiring multi-channel support
• Industrial systems operating within extended temperature ranges
• Infrared data transmission applications utilizing built-in encoding and decoding logic

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and electrical characteristics. Ensure the component meets the required voltage levels and interface standards for the target system design. Cross-reference pin configurations with the official datasheet to validate compatibility with existing PCB layouts.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent serial channels are required within a single integrated circuit. Consider the PLCC68 package constraints if space is limited. Evaluate the need for IrDA support versus standard RS-232 or TTL interfaces. Confirm that the external processor can handle the selected bus interface mode, either 16-bit or 68-bit, as determined by hardware pin settings.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C654 series of quad UARTs. It is functionally equivalent to industry-standard devices like the ST16C654 and TL16C754. The device powers up to be compatible with the 16C454 but offers enhanced features through register programming. It serves as an upgrade solution for legacy designs requiring higher throughput and additional control features.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C654IA68 is pin-compatible with the ST16C654 and TL16C754. Designers should verify that substitute components maintain the same FIFO depth and voltage specifications. Interface mode selection pins must be configured correctly to ensure bus compatibility with the host microprocessor.