ST16C654CQ64-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C654CQ64-F is a quad universal asynchronous receiver/transmitter manufactured by MaxLinear. It features four independent UART channels, each equipped with a 64-byte transmit and receive FIFO buffer to enhance data throughput and reduce CPU intervention. The device supports data rates up to 1.5 Mb/s and operates within a supply voltage range of 2.97 V to 5.5 V. It is housed in a 64-lead LQFP package and is rated for an industrial operating temperature range of 0°C to +70°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrates four independent UART channels with dedicated 64-byte FIFOs for efficient data buffering.
• Supports standard serial communication protocols including RS-232 signaling levels.
• Includes internal oscillator and timer/counter capabilities for precise baud rate generation.
• Features automatic flow control and modem control line management for robust connectivity.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial connections
• Embedded controllers needing high-throughput UART interfaces
• Communication gateways utilizing Intel or Motorola bus compatibility

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'CQ64' confirms the commercial temperature grade (0°C to +70°C) and LQFP-64 package variant. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure EOL status is checked as this part number may have limited availability compared to newer series replacements.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent UART ports are required with substantial FIFO depth to handle burst data traffic. Compare against the ST16C554D series if only 16-byte FIFOs are sufficient for the application. Verify that the 2.97V to 5.5V supply range aligns with the system power architecture and that the 0°C to +70°C temperature rating meets environmental requirements.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the VLIO UART family from MaxLinear, designed for versatile interface applications. It serves as a successor to legacy 16C554/16C654 designs, offering improved performance with larger FIFOs. The ST16C654CQ64-F specifically targets cost-sensitive embedded markets requiring reliable serial communication without complex external logic.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The ST16C654DIJ68-F offers similar functionality but in a PLCC-68 package with extended temperature ratings. For lower FIFO requirements, the ST16C554DCQ64-F provides a pin-compatible alternative with 16-byte buffers. Verify pinout compatibility before substituting.