TL16C550DRHB

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DRHB is a single-channel asynchronous communications element (ACE) manufactured by Texas Instruments, housed in a 32-pin RHB package. It supports 5-V, 3.3-V, and 2.5-V operation with a maximum data rate of 1.5 Mbaud at 5 V using a 24-MHz clock. The device features 16-byte transmit and receive FIFOs with error status bits. It includes programmable auto-RTS and auto-CTS autoflow control to manage serial data flow. The component operates within a temperature range of -40°C to +85°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrated autoflow control with programmable auto-RTS and auto-CTS capabilities
• 16-byte transmit and receive FIFOs for reduced CPU overhead
• Compatible with existing TL16C450 software register sets
• Independent interrupt system for receiver errors, data availability, and modem status

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial-to-parallel and parallel-to-serial data conversion in embedded systems
• Modem control applications requiring direct RJ11 cable drive capability
• High-speed asynchronous communication links up to 1.5 Mbaud

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm pinout compatibility and electrical specifications. Ensure the procurement channel provides valid traceability for the Texas Instruments brand. Confirm that the received components match the 32-pin RHB package designation before integration into the design.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a reduced pin count solution is required compared to the 48-pin PT or PFB packages. The RHB package eliminates specific chip select and DMA signals while maintaining full ACE functionality. Verify that the application does not require the external DDIS, TXRDY, or RXRDY signals which are absent in this package variant.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C550D series serves as a speed and voltage upgrade to the TL16C550C and is functionally equivalent to the TL16C450 on power-up. The RHB package variant specifically reduces pin count by removing unused control signals like CS0, CS1, ADS, and DMA outputs, making it suitable for space-constrained designs without sacrificing core UART performance.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DIPTG4 is a functional equivalent in a different package. Verify pin compatibility if substituting between the RHB and LQFP packages.