TL16C550DIRHBR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DIRHBR is a single-channel Asynchronous Communications Element (ACE) manufactured by Texas Instruments, housed in a 32-pin RHB package. It supports operation with supply voltages ranging from 2.25 V to 5.5 V. The device features 16-byte transmit and receive FIFOs with error status bits. It accommodates baud rates up to 1.5 Mbaud with a 24-MHz clock at 5 V, or up to 1 Mbaud with a 16-MHz clock at 2.5 V. Operating temperatures range from -40°C to +85°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Programmable autoflow control utilizing auto-RTS and auto-CTS mechanisms to manage serial data flow and reduce software overhead.
• Integrated programmable baud rate generator capable of dividing reference clocks by divisors from 1 to 65535.
• Complete modem control capabilities including DTR, RTS, CTS, DSR, RI, and DCD signals for direct interface with communication equipment.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial-to-parallel and parallel-to-serial data conversion in embedded systems
• Interfacing microprocessors with modems and peripheral devices
• High-speed asynchronous communication links requiring hardware flow control

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'RHBR' corresponds to the 32-pin RHB package and tape-and-reel packaging configuration. Confirm that the component meets the required voltage and temperature specifications for the target application environment before finalizing procurement orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single UART channel with integrated hardware autoflow control is required. Ensure the design utilizes the 32-pin RHB package constraints, noting that certain bus signals like ADS and RD2/WR2 are not available compared to larger packages.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C550D family, serving as a functional upgrade to the TL16C450. It maintains register compatibility with legacy software while offering improved speed and lower voltage operation options across various package types including PT, PFB, RHB, and ZQS.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DIPTG4 is a functionally equivalent alternative available in a 48-pin LQFP package. Verify pinout compatibility and package dimensions if substituting into an existing footprint.

UARTs (Universal Asynchronous Receiver Transmitter) FAQ

How does the autoflow control feature operate?

Autoflow control combines auto-RTS and auto-CTS. Auto-RTS deasserts when the receiver FIFO reaches a trigger level, notifying the sender to stop. Auto-CTS prevents transmission until the CTS input is active, eliminating overrun errors without CPU intervention.

What is the maximum baud rate supported at 2.5V?

At a supply voltage of 2.5 V, the device supports baud rates up to 1 Mbaud using a 16-MHz input clock.