ST16C654CQ64TR-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C654CQ64TR-F is a quad Universal Asynchronous Receiver and Transmitter (UART) manufactured by MaxLinear. It integrates 64 bytes of transmit and receive FIFOs per channel to enhance data throughput and reduce CPU overhead. The device supports data rates up to 1.5 Mbps and operates within a supply voltage range of 2.97 V to 5.5 V. It features an internal oscillator, automatic flow control, and modem serial interface controls. The component is housed in a 64-LQFP package with dimensions of 10x10 mm and is rated for commercial operating temperatures from 0°C to +70°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with dedicated 64-byte transmit and receive FIFOs for each channel
• Supports high-speed asynchronous communication with data rates reaching 1.5 Mbps
• Includes internal loopback capability for onboard diagnostic testing
• Compatible with Intel and Motorola bus interfaces

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial ports
• Telecommunications equipment utilizing RS-232 protocols
• Embedded controllers needing high-throughput serial I/O
• Modem interface applications with hardware flow control

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix TR-F indicates tape-and-reel packaging when sourcing replacements. Confirm that the C-grade temperature rating (0°C to +70°C) matches the target environment requirements. Check for End-of-Life status as distribution availability may be limited. Ensure compatibility with existing PCB footprints for the 64-LQFP package during procurement planning.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent UART channels are required with substantial buffering capabilities. The 64-byte FIFO depth distinguishes it from lower-capacity variants like the ST16C554. Verify that the 2.97V minimum supply voltage aligns with the system power rails. Consider the LQFP-64 package constraints regarding board space and thermal dissipation for the final design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the ST16C654D series of quad UARTs produced by MaxLinear, formerly Exar. It serves as a high-performance serial interface solution for complex embedded systems. The device complements other members of the family by offering increased FIFO depth compared to standard 16-byte versions, facilitating smoother data handling in high-baud-rate applications.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Direct pin-compatible substitutes include the ST16C654IQ64-F for extended temperature ranges or the ST16C654DCQ64-F for tray packaging. Verify functional equivalence regarding FIFO size and voltage specifications before substitution.