ST16C550CP40

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C550CP40 is a dual universal asynchronous receiver and transmitter (UART) manufactured by MaxLinear, Inc. It features integrated 16-byte transmit and receive FIFOs to enhance data throughput and reduce processor overhead. The device operates within a voltage range of 2.97 V to 5.5 V and supports baud rates up to 1.5 Mbps with a 24 MHz clock at 5 V. It is housed in a 40-pin PDIP package designed for through-hole mounting. The component provides full-duplex communication with standard modem interface signals and includes programmable interrupt trigger levels.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrated 16-byte transmit and receive FIFO buffers
• Pin-to-pin compatible with industry standard 16C550 devices
• Supports full-duplex operation with standard modem interface
• Programmable baud rate generator with selectable interrupt levels

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial serial communication systems
• Embedded controller interfaces requiring high-throughput UART
• Telecommunications equipment with standard RS-232/RS-485 requirements

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the manufacturer designation carefully, as this part number has been associated with both Exar Corporation and MaxLinear due to corporate acquisitions. Confirm the specific datasheet revision and RoHS compliance status directly with the supplier or authorized distributor before procurement. Ensure the PDIP-40 through-hole package matches the target PCB footprint requirements.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a direct replacement for legacy 16C550 designs is required without altering the PCB layout. It is suitable for applications needing moderate data rates up to 1.5 Mbps and low power consumption. Consider alternative packages if surface-mount technology is preferred, as this specific suffix indicates a through-hole DIP configuration.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the ST16C55x family of UART interface ICs. It serves as a bridge between parallel microprocessor buses and serial asynchronous communication lines. The inclusion of FIFOs distinguishes it from older 16550 variants that lack buffering, offering improved performance in noisy environments or high-speed data transfers.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The ST16C550DIQ64-F is a quad-channel variant with similar FIFO capabilities but differs in channel count and package type. Direct pin-compatible replacements include other 16C550 derivatives from various manufacturers, provided voltage and timing specifications are verified.