TL16C550DPFBG4

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DPFBG4 is a single-channel asynchronous communications element (ACE) manufactured by Texas Instruments, housed in a 48-pin Thin Quad Flatpack (TQFP) package. It supports 5-V, 3.3-V, and 2.5-V operation with a maximum clock rate of 24 MHz for baud rates up to 1.5 Mbaud at 5 V. The device features 16-byte transmit and receive FIFOs with error status bits, programmable auto-RTS and auto-CTS flow control, and independent interrupts. It includes a programmable baud rate generator, full modem control signals, and is backward compatible with the TL16C450 register set.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Autoflow control capability using programmable auto-RTS and auto-CTS mechanisms to manage serial data flow and reduce CPU overhead.
• Integrated 16-byte transmit and receive FIFOs that buffer data and include error status bits to minimize software management.
• Programmable baud rate generator capable of dividing an input reference clock by divisors from 1 to 65535.
• Complete modem control functions including DTR, RTS, CTS, DSR, RI, and DCD with independent interrupt capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial communication interfaces between microprocessors and peripheral devices or modems.
• Embedded systems requiring high-speed asynchronous data transfer with hardware flow control.
• Industrial control applications utilizing TMS320 digital signal processors for real-time data acquisition.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the component authenticity through authorized Texas Instruments distributors or certified suppliers. Confirm the presence of the G4 suffix indicates lead-free and RoHS compliance. Ensure the PFB package designation matches the required 48-pin TQFP form factor for your PCB layout. Check for any specific environmental certifications required by your regional regulations before finalizing the order.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single UART channel with hardware autoflow control is required. It serves as a speed upgrade to the TL16C550C while maintaining functional compatibility with legacy TL16C450 software. Choose the PFB package for surface-mount assembly needs. Consider the operating voltage range of 2.25 V to 5.5 V to ensure compatibility with your system power rails.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C550D series represents a performance-enhanced version of the TL16C550C ACE. It offers higher clock speeds and baud rates compared to its predecessors. The device maintains pinout and register compatibility with the TL16C450, allowing for direct upgrades in existing designs without significant software modifications.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DIPTG4 is a functionally equivalent alternative available in a 48-LQFP package. Designers should verify package dimensions and pin assignments if substituting between PT/PFB and LQFP variants to ensure mechanical fit.