TL16C550DPTR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DPTR is an asynchronous communications element (ACE) manufactured by Texas Instruments, featuring a single UART channel with integrated 16-byte transmit and receive FIFOs. It supports data rates up to 1.5 Mbaud with a 24-MHz clock at VCC = 5V, or up to 3 Mbaud with a 48-MHz clock at VCC = 3.3V in the ZQS package variant. The device operates on supply voltages ranging from 2.25V to 5.5V. It includes programmable auto-RTS and auto-CTS autoflow control, false-start bit detection, and a fully prioritized interrupt system. The component is housed in a 48-pin LQFP package and is supplied in tape-and-reel packaging.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrated autoflow control mechanism utilizing auto-RTS and auto-CTS to manage serial data flow and reduce software overhead.
• Programmable baud rate generator capable of dividing reference clocks to support various standard asynchronous communication protocols.
• Comprehensive 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 computer peripheral interfaces
• Modem control and status monitoring in telecommunications equipment
• Embedded systems requiring high-speed asynchronous communication with reduced CPU intervention

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure compatibility with existing PCB footprints for the 48-pin LQFP configuration. Confirm voltage requirements align with the 2.25V to 5.5V operating range specified in the datasheet before finalizing procurement orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when design requirements include 16-byte FIFO buffering to minimize processor interrupts during high-volume data transfers. Consider the available package options, such as the 48-pin PT, PFB, RHB, or ZQS variants, based on pin count constraints and thermal management needs. Verify that the host system can provide the necessary clock frequencies to achieve the desired baud rates.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C550D series serves as a speed and voltage upgrade to the earlier TL16C550C ACE, while maintaining functional equivalence to the TL16C450 upon power-up. It offers enhanced performance characteristics, including higher maximum clock rates and broader voltage operation ranges, making it suitable for modern embedded applications requiring reliable serial communication interfaces.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DIPTG4 is a documented equivalent within the same family. Verify pinout compatibility and register set alignment before substitution. Other variants like TL16C550CFN offer different packages but may have distinct electrical characteristics or availability status.