ST16C2550IJ44TR-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The ST16C2550IJ44TR-F is a dual universal asynchronous receiver and transmitter (UART) fabricated in an advanced CMOS process. It features two independent UART channels, each equipped with 16-byte transmit and receive FIFOs to reduce external CPU bandwidth requirements. The device supports data rates up to 4 Mbps with a 64 MHz external clock or 1.5 Mbps with a 24 MHz crystal. Operating voltage ranges from 2.97V to 5.5V. It includes programmable baud rate generators, selectable interrupt trigger levels, and internal loopback capabilities for diagnostics. The component is housed in a 44-pin PLCC package and operates within a temperature range of -40°C to +85°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual independent UART channels with 16-byte FIFOs
• Supports data rates up to 4 Mbps
• Integrated modem control interface
• Internal loopback capability for diagnostics

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Portable Appliances
• Telecommunication Network Routers
• Ethernet Network Routers
• Cellular Data Devices
• Factory Automation and Process Controls

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type, temperature range, and tape-and-reel configuration. Ensure compatibility with existing system designs by checking pin assignments and register sets against legacy components like the ST16C2450 or TL16C752B.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a dual-channel UART solution with integrated FIFOs is required for high-speed serial communication. Consider the 44-pin PLCC package constraints and verify that the host processor can support the necessary address and data bus interfaces. Evaluate power supply requirements to ensure operation within the specified 2.97V to 5.5V range.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The ST16C2550 series represents an enhanced version of the standard 16C550 UART, offering improved performance through onboard FIFO memory. It maintains software compatibility with previous generations while providing additional features such as selectable interrupt trigger levels and higher operating speeds. The device is part of a broader family including single and quad UART variants.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Pin-to-pin compatible with Exar’s ST16C2450, XR16L2550, and XR16L2750. On the 48-TQFP package, it is also compatible with TI’s TL16C752B.