ST16C1450IQ48-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C1450IQ48-F is a universal asynchronous receiver and transmitter (UART) fabricated in an advanced CMOS process. It operates on a single power supply ranging from 2.97V to 5.5V. The device features one byte of transmit FIFO (THR) and one byte of receive FIFO with error tags (RHR). It supports data rates up to 1.5 Mbps using a 24 MHz clock or 921.6 Kbps with a 14.7456 MHz crystal. The component includes programmable baud rate generators, four levels of prioritized interrupts, and internal loopback capabilities for diagnostics. It is housed in a 48-pin TQFP package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Pin and functionally compatible with SSI 73M1550/2550 UARTs
• Includes onboard status registers providing error indications and operational status
• Supports software controllable reset output and internal loop-back capability
• Features independent programmable baud rate generators with crystal or external clock input

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Battery Operated Electronics
• Internet Appliances
• Handheld Terminal
• Personal Digital Assistants
• Cellular Phones DataPort

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against official MaxLinear documentation to confirm package type and temperature range. Ensure compatibility with host system voltage requirements within the specified 2.97V to 5.5V operating window. Confirm that the application does not rely on standard MS Windows serial port drivers, as this device is explicitly noted as incompatible with them.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when footprint compatibility with legacy SSI 73M1550/2550 designs is required alongside enhanced features. Consider the 48-pin TQFP package for surface mount applications requiring -40°C to +85°C industrial temperature operation. Evaluate the need for software-controllable reset outputs and internal diagnostic loopback modes before finalizing the design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The ST16C1450 belongs to the Exar/MaxLinear UART interface family, designed as an enhanced replacement for older industry standards. It provides higher operating speeds and lower access times compared to basic FIFO-less UARTs. The device bridges legacy pinouts with modern low-power CMOS technology, targeting embedded systems requiring reliable serial communication without complex driver dependencies.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The datasheet identifies the ST16C450 as the compatible alternative for applications requiring support from standard MS Windows serial port drivers. Designers must verify that any substitute maintains the specific 48-pin TQFP form factor and industrial temperature range if those constraints are critical to the assembly.