TL16C554IFNR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C554IFNR 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 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 suitable for surface-mount applications. Key functional capabilities include automatic flow control, modem control signals, and false start bit detection, ensuring reliable asynchronous communication in embedded systems.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad channel architecture with independent 16-byte transmit and receive FIFOs per channel
• Supports automatic hardware flow control and standard modem control signal interfacing
• Includes false start bit detection logic to improve communication integrity
• Compatible with 3V to 5.25V power supplies for versatile system integration

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation controllers requiring multiple serial ports
• Embedded communication gateways and protocol converters
• Data acquisition systems with high-throughput serial requirements
• Telecommunications equipment interfaces

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix IFNR confirms the 68-PLCC package and industrial temperature range during sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering quantity matches the tape-and-reel specifications provided by the distributor. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent UART interfaces are required in a single package. The 16-byte FIFOs are critical for applications involving burst data transfers or interrupt-driven processing. Ensure the target system supports the 68-PLCC footprint and provides adequate thermal management. Verify that the operating voltage aligns with the 3V to 5.25V specification of the host system.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C554A family of quad UARTs from Texas Instruments. It serves as a high-performance alternative to legacy single-channel UARTs, consolidating multiple serial interfaces into one component. The IFNR variant specifically denotes the plastic leaded chip carrier package configuration, distinguishing it from LQFP or other package options within the same electrical specification set.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Direct pin-to-pin replacements may include other quad UARTs from the same family with different package suffixes, such as TL16C554AI or variants with extended temperature ranges. Verify compatibility regarding FIFO depth and control register mapping before substitution.