TL16C550DIZQSR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550DIZQSR is a single-channel asynchronous communications element (ACE) from 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 and up to 3 Mbaud at 3.3 V using the ZQS package clock rates. The device features 16-byte transmit and receive FIFOs with error status bits. It includes programmable baud rate generation, auto-RTS/CTS flow control, and independent interrupts for receiver errors, data availability, and modem status.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Autoflow control mechanism utilizing auto-RTS and auto-CTS to manage serial data transmission without CPU intervention.
• Programmable baud rate generator capable of dividing reference clocks by divisors from 1 to 65535.
• Integrated diagnostic capabilities including loopback controls for fault isolation and error detection for break, parity, overrun, and framing conditions.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial-to-parallel and parallel-to-serial conversion between CPUs and peripheral devices or modems.
• Systems requiring DMA signaling via TXRDY and RXRDY outputs for efficient data transfer.
• Applications needing direct drive of RJ11 cables for serial and modem control outputs.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product folder to confirm package type and voltage range compatibility. Ensure the procurement channel provides original manufacturer documentation to validate authenticity and revision level before integration into production designs.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a functional upgrade to the TL16C450 is required with higher speed capabilities and integrated FIFO buffering. Consider the 32-pin RHB package if signal reduction is acceptable, as it omits certain chip select and DMA signals while maintaining core ACE functionality compared to the 48-pin variants.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the TL16C550D family, serving as a speed and voltage upgrade over the TL16C550C. It maintains functional equivalence to the legacy TL16C450 on power-up but offers enhanced performance with 16-byte FIFOs and autoflow control, reducing software overhead in embedded communication systems.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550DI is functionally equivalent but may differ in package options. Verify pinout compatibility if replacing TL16C450 designs, noting that the RHB package removes specific control signals like CS0, CS1, and ADS.