ST16C554DCQ64-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C554DCQ64-F is a quad Universal Asynchronous Receiver and Transmitter (UART) manufactured by MaxLinear. It integrates 16 bytes of transmit and receive FIFOs for each channel, supporting data rates up to 1.5 Mb/s. The device operates within a supply voltage range of 2.97 V to 5.5 V and functions at temperatures from 0°C to +70°C. It features selectable receive FIFO trigger levels, internal loopback for diagnostics, and compatibility with Intel and Motorola bus protocols. The component is housed in a 64-LQFP package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with independent 16-byte transmit and receive FIFOs per channel
• Supports high-speed asynchronous communication with data rates up to 1.5 Mb/s
• Includes internal loopback capability for onboard diagnostic testing
• Compatible with standard Intel and Motorola bus interfaces

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial control systems requiring multiple serial communication ports
• Embedded devices needing reliable RS-232 interface connectivity
• Data acquisition systems utilizing buffered serial transmission

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'DCQ64' to confirm the commercial temperature range (0°C to +70°C) and LQFP-64 packaging. Ensure the source document explicitly identifies MaxLinear as the manufacturer, noting historical Exar lineage if relevant. Confirm RoHS compliance status through the official datasheet rather than distributor summaries.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent UART channels are required with 16-byte buffering. Verify that the 0°C to +70°C operating range meets environmental requirements. Ensure the system supports 2.97V to 5.5V logic levels. Compare against the industrial grade variant if wider temperature tolerance is necessary.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the ST16C554D series, which provides quad UART functionality. It serves as a commercial-grade alternative to industrial variants like the ST16C554DIQ64-F, which offers extended temperature ranges. The device maintains pin compatibility within the family while differing in thermal specifications and packaging options.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The ST16C554DIQ64-F is a confirmed substitute offering an extended temperature range (-40°C to +85°C) in the same LQFP-64 package. Other family members may require verification of FIFO depth and package type before substitution.