TL16C554FN

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C554FN 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 4.75 V to 5.25 V. It is housed in a 68-pin PLCC package with dimensions of 24.23 mm x 24.23 mm. Key functional attributes include automatic flow control, modem control signals, and false start bit detection capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrates four independent UART channels with 16-byte FIFOs for efficient data handling
• Supports baud rates up to 1 Mbps with automatic flow control and modem control
• Includes false start bit detection to improve communication reliability

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial communication systems requiring multiple serial ports
• Embedded controllers needing high-speed asynchronous data transfer
• Modem interface circuits with hardware flow control requirements

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'FN' corresponds to the 68-PLCC package and 4.75V–5.25V operating voltage range. Confirm RoHS3 compliance status and moisture sensitivity level (MSL 3) prior to procurement. Ensure the ordering part number matches the required tape-and-reel or tube packaging format as specified by the manufacturer's current documentation.

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 suitable for applications demanding reduced CPU intervention during high-throughput serial communications. Ensure the system power supply remains stable between 4.75 V and 5.25 V to maintain proper operation. Verify that the 68-PLCC footprint fits the target PCB layout constraints.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C554 family of quad UARTs from Texas Instruments. Variants such as TL16C554AFNR and TL16C554AIPNR offer similar functionality but differ in package type (e.g., 68-PLCC vs. 80-LQFP) and operating temperature ranges. The TL16C554FN specifically denotes the industrial-grade version in a plastic leaded chip carrier package.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Direct pin-compatible alternatives may include other members of the TL16C554 family with different suffixes indicating package variations. Verify electrical specifications and package dimensions before substitution.