TL16C550DPT

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DPT is a single-channel Asynchronous Communications Element (ACE) manufactured by Texas Instruments, housed in a 48-pin LQFP package. It supports data rates up to 1.5 Mbaud with a 24-MHz clock at VCC = 5V, and up to 3 Mbaud with a 48-MHz clock at VCC = 3.3V (ZQS package only). The device operates on supply voltages of 5V, 3.3V, or 2.5V. It features 16-byte transmit and receive FIFOs with error status bits. Key specifications include a maximum operating temperature of +85°C and a minimum of -40°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Programmable autoflow control with independent Auto-RTS and Auto-CTS capabilities to manage serial data flow and reduce CPU overhead.
• Fully prioritized interrupt system with complete status reporting for receiver errors, transmitter empty states, and modem status changes.
• Supports standard asynchronous communication bits including programmable character lengths, parity generation/detection, and stop bit configuration.
• Includes internal diagnostic loopback controls for communications link fault isolation and false-start bit detection.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial-to-parallel and parallel-to-serial conversion in embedded systems requiring high-speed UART interfaces.
• Interfacing between microprocessors and peripheral devices or modems where DMA signaling (TXRDY/RXRDY) is utilized.
• Systems requiring direct RJ11 cable drive capability for modem control signals without external buffering.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product folder to confirm package type and temperature range. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Cross-reference the datasheet revision date to confirm feature availability, particularly regarding autoflow control implementation details.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a functional upgrade from the TL16C450 is required with higher baud rate capabilities. Consider the 48-pin PT/PFB package for full modem signal access. Evaluate the reduced pin count RHB or ZQS packages if specific control signals like DSR or RI are not needed in the target application design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C550D serves as a speed and voltage upgrade to the TL16C550C while maintaining functional equivalence to the legacy TL16C450 register set. It offers improved performance characteristics, supporting higher clock frequencies and lower voltage operation options compared to its predecessors within the same asynchronous communications family.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DI is functionally equivalent but may differ in environmental rating or packaging variant. The TL16C550C is a prior generation version with lower maximum baud rates. Verify pin compatibility and software register mapping before substituting these related parts.