ST16C654DCQ64-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C654DCQ64-F is a quad universal asynchronous receiver/transmitter (UART) interface integrated circuit manufactured by MaxLinear. It operates within a supply voltage range of 2.97 V to 5.5 V and supports data rates up to 1.5 Mb/s. Each channel is equipped with independent 64-byte transmit and receive FIFOs, reducing processor overhead. The device features an internal oscillator and supports both Intel and Motorola bus protocols. It is housed in a 64-lead Low Profile Quad Flat Package (LQFP) with dimensions of 10x10 mm. The commercial temperature grade covers an operating range from 0°C to +70°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with dedicated 64-byte FIFOs for each channel to minimize CPU intervention during serial communication.
• Integrated internal oscillator eliminates the need for external clock components, simplifying board design.
• Supports standard serial protocols including auto-flow control, modem control signals, and false start bit detection.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial communication ports
• Telecommunications equipment utilizing RS-232 or similar serial interfaces
• Embedded control units needing reliable asynchronous data transfer

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify component authenticity through authorized MaxLinear distributors or certified partners. Request official datasheets and RoHS compliance documentation prior to purchase. Confirm that the specific suffix matches the required temperature grade and package variant. Check for recent Product Change Notifications regarding manufacturing updates. Ensure storage conditions meet moisture sensitivity level requirements before assembly.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four independent serial channels are required with moderate data throughput capabilities. The 64-byte FIFO depth is suitable for applications where burst data transmission occurs without immediate processor polling. Verify that the 0°C to +70°C commercial temperature range aligns with the target environment. Compare against higher-performance variants like the XR16V654 series if speeds exceeding 1.5 Mb/s are necessary.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the ST16C654D family of quad UARTs from MaxLinear. It shares functional similarities with the ST16C554DIQ64-F but offers increased buffer capacity. The DCQ64 suffix indicates the commercial temperature range and LQFP-64 packaging. It serves as a legacy interface solution for systems transitioning from single-channel UARTs to multi-port architectures.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The ST16C654IQ64-F is a verified equivalent offering identical electrical specifications but with an extended industrial temperature range of -45°C to +85°C. Both parts utilize the same LQFP-64 package and pinout configuration. Designers should verify thermal management requirements when substituting between these variants.