TL16C550DIRHBRG4

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DIRHBRG4 is a single-channel asynchronous communications element (ACE) manufactured by Texas Instruments. It operates with supply voltages of 2.5 V, 3.3 V, and 5 V. The device features 16-byte transmit and receive FIFOs to reduce CPU overhead. It supports baud rates up to 1 Mbaud at 2.5 V, 1.25 Mbaud at 3.3 V, and 1.5 Mbaud at 5 V. The component is housed in a 32-pin RHB package and includes programmable auto-RTS and auto-CTS autoflow control.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Programmable autoflow control using auto-RTS and auto-CTS signals to manage serial data flow automatically.
• Integrated 16-byte transmit and receive FIFOs that buffer characters and error status bits.
• Complete modem control capability including DTR, RTS, CTS, DSR, RI, and DCD signals.
• Fully prioritized interrupt system with independent control for line status, data set, and transmit/receive interrupts.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial-to-parallel and parallel-to-serial data conversion for peripheral devices.
• Modem interface circuits requiring direct drive capabilities for RJ11 cables.
• Systems utilizing DMA controllers via TXRDY and RXRDY signaling.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. Ensure the procurement channel provides valid traceability for the RG4 lead-free designation. Confirm compatibility with the target system's voltage levels and clock requirements before finalizing orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single UART channel with hardware autoflow control is required. The RHB package offers a reduced pin count compared to standard QFP options while maintaining full functionality. Consider the maximum baud rate limitations relative to the chosen operating voltage and input clock frequency.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C550D family, which serves as an upgrade to the TL16C550C and TL16C450. It maintains functional equivalence with previous generations on power-up but offers improved speed and voltage flexibility. The RHB package variant specifically reduces pin count by eliminating unused signals for compact designs.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DIPTG4 is a functional equivalent available in a 48-pin PT package. Verify pinout compatibility and signal availability, as the RHB package omits certain chip select and output signals present in larger packages.