ST16C654DIQ64-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C654DIQ64-F is a quad Universal Asynchronous Receiver and Transmitter (UART) manufactured by MaxLinear, Inc. It features 64-byte transmit and receive FIFOs with selectable interrupt trigger levels. The device supports data rates up to 1.5 Mbps at a 24 MHz clock frequency. Operating voltage ranges from 2.97 V to 5.5 V, with typical supply currents of 3 mA and 6 mA across the industrial temperature range of -40°C to +85°C. It is housed in a 64-pin LQFP package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual footprint interface compatible with ST16C554 and ST68C554 standards
• Integrated automatic hardware and software flow control mechanisms
• Internal loopback capability for onboard diagnostic testing

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial communication systems requiring high throughput serial interfaces
• Embedded controllers needing multiple asynchronous serial ports
• Modem interface applications with standard control signals

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the manufacturer designation on the component marking, as this part was originally an Exar product now under MaxLinear. Confirm the suffix 'F' indicates lead-free compliance and RoHS status. Ensure the specific package variant matches the required PCB footprint for the 64-LQFP configuration before finalizing orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this model when existing designs utilize ST16C554 or ST68C554 components but require larger buffer depths. The 64-byte FIFOs reduce CPU intervention compared to 16-byte alternatives. Verify that the system clock can support the 24 MHz requirement for maximum baud rate generation without exceeding power constraints.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the enhanced UART family designed for multi-channel serial communication. It serves as a direct upgrade path for legacy 16-byte FIFO UARTs in dense PCB layouts. The dual footprint design facilitates migration between different pin-compatible families within the same ecosystem.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The ST16C554DIQ64-F is a pin-compatible alternative offering smaller 16-byte FIFOs. The ST68C554DIQ64-F provides similar functionality with potential bus compatibility differences.