TL16C554AIFN

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C554AIFN is a quad universal asynchronous receiver/transmitter (UART) integrated circuit manufactured by Texas Instruments. It features four independent UART channels, each equipped with a 16-byte FIFO buffer to enhance data throughput and reduce processor overhead. The device supports data rates up to 1 Mbps and operates within a supply voltage range of 3V to 5.25V. It is housed in a 68-pin PLCC package and includes hardware flow control capabilities such as modem control signals and automatic flow control. The component is designed for surface-mount installation and complies with RoHS standards.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with independent 16-byte transmit and receive FIFOs per channel
• Supports baud rates up to 1 Mbps with programmable clock dividers
• Integrated hardware flow control including RTS/CTS and modem status signals
• False start bit detection capability to improve communication reliability

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial connections
• Embedded controllers needing high-speed asynchronous communication interfaces
• Telecommunications equipment utilizing standard UART protocols
• Data acquisition systems with moderate throughput requirements

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'IFN' against the official Texas Instruments datasheet to confirm the 68-PLCC package and industrial temperature range specifications. Ensure compatibility with existing PCB footprints for LCC-68 packages. Confirm that the required operating voltage aligns with the 3V to 5.25V specification. Check for any recent product change notices regarding pinout or electrical characteristics before finalizing procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent UART channels are required in a single package. It is suitable for designs needing 16-byte FIFOs to manage burst data traffic efficiently. Consider the 68-pin PLCC package constraints for board space and thermal management. Verify that the maximum data rate of 1 Mbps meets the system's communication speed requirements. Ensure the supply voltage range matches the target power domain.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C554AIFN belongs to the TL16C554 family of quad UARTs from Texas Instruments. This family provides a cost-effective solution for multi-channel serial communication in embedded applications. The 'IFN' suffix typically denotes the 68-pin PLCC package variant. It serves as a direct replacement for legacy UART components while offering improved FIFO performance and lower power consumption compared to older generations.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C554AIPNR is a parameter-equivalent alternative available in an 80-LQFP package. Designers must account for the pin count difference and physical footprint changes when substituting between PLCC and LQFP packages. Electrical characteristics remain consistent, but layout adjustments are necessary for pin mapping differences.