TL16C552AFNR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C552AFNR is a dual universal asynchronous receiver/transmitter (UART) integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and features two independent UART channels, each equipped with a 16-byte FIFO buffer. The device supports data transmission rates up to 1 Mbps and utilizes an 8-bit external data bus width with a 3-bit address bus. It is housed in a 68-pin PLCC package and is designed for operation within the commercial temperature range of 0°C to 70°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual UART architecture with independent 16-byte FIFOs for each channel
• Supports standard asynchronous communication protocols with auto-flow control capabilities
• Integrated parity generation and detection along with break signal generation

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial serial communication interfaces requiring high throughput
• Embedded systems needing multiple asynchronous serial ports
• Data acquisition systems utilizing buffered serial data transfer

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'A' against official Texas Instruments documentation to confirm it denotes the commercial temperature grade (0°C to 70°C) and 5V-only operation. Ensure the 68-PLCC package variant matches the target PCB footprint requirements. Cross-reference the RoHS compliance status with the latest manufacturer release notes prior to procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a design requires two isolated UART channels with hardware flow control and buffering. Compare against single-channel alternatives if only one port is needed to reduce cost. Verify that the 5V logic levels are compatible with the host system's I/O standards. Consider the PLCC package availability and soldering requirements during the selection phase.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C552 family of dual UARTs from Texas Instruments. It shares functional similarities with the TL16C552 but may differ in temperature rating or packaging specifics indicated by the suffix. It serves as a bridge between parallel microprocessor buses and serial communication lines, offering enhanced performance over legacy 16550-compatible devices through its larger FIFO buffers.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Publicly confirmed substitute part numbers for the TL16C552AFNR were not identified in the provided reference material. Engineers should consult the official TI pinout compatibility matrix for potential cross-references within the TL16C55x series.