TL16C554PNR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C554PNR 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 for both transmit and receive operations to enhance data throughput. The device supports data rates up to 1 Mbps and operates within a supply voltage range of 3 V to 5.25 V. It is housed in an 80-pin Low-Profile Quad Flat Package (LQFP) with dimensions of 12 mm x 12 mm. The component includes modem control signals, automatic flow control, and false start bit detection capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Four independent UART channels with 16-byte transmit and receive FIFOs
• Supports baud rates up to 1 Mbps with programmable clock dividers
• Integrated modem control interface and automatic hardware flow control
• False start bit detection for improved signal integrity

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial communication interfaces for digital signal processors (DSPs)
• Multi-port serial expansion in embedded systems
• Industrial control systems requiring multiple asynchronous connections
• Modem control applications with hardware flow management

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'PNR' against official Texas Instruments documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with system voltage levels between 3 V and 5.25 V. Confirm moisture sensitivity level (MSL 3) requirements for surface-mount assembly processes. Cross-reference the 80-LQFP footprint dimensions with PCB design files.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent serial ports are required in a single package. The 16-byte FIFOs reduce CPU overhead compared to standard 16550 devices. Verify that the 80-pin LQFP package fits the available board space. Ensure the application requires support for modem control lines and automatic flow control features provided by this specific variant.

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 serial interface solution for complex embedded designs. The device is designed to replace multiple single-channel UARTs, reducing component count and board area. It is commonly used in systems requiring extensive serial connectivity, such as telecommunications equipment and industrial automation controllers.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C554AIPN and TL16C554APN are listed as parameter-equivalent alternatives. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement part meets the same 80-LQFP package requirement and operating voltage range.