XR17C154IV-F

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The XR17C154IV-F is a quad universal asynchronous receiver and transmitter designed for PCI bus applications. It operates on a single 5V power supply and supports data rates up to 6.25 Mbps. The device integrates four independent UART channels, each equipped with a 64-byte transmit and receive FIFO buffer to enhance throughput. It features automatic flow control, IrDA encoder/decoder support, and false start bit detection. The component is housed in a 144-LQFP package (20x20 mm) and is rated for an industrial temperature range of -40°C to +85°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• PCI Bus Interface Compatibility
• Quad Channel Architecture with 64-Byte FIFOs
• IrDA Support and Automatic Flow Control

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial connections
• Telecommunications equipment utilizing PCI bus architecture
• Embedded control systems needing high-speed serial communication

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the manufacturer source carefully, as MaxLinear acquired Exar, which originally produced this series. Confirm the specific suffix 'IV-F' matches the required industrial temperature grade (-40°C to +85°C) and RoHS compliance status. Check current availability as legacy PCI components may have limited stock or end-of-life status from distributors.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a 5V-only PCI interface is required with four independent serial ports. Ensure the system design accommodates the 144-pin LQFP footprint. Compare against the XR17D154 if 3.3V/5V dual-voltage operation is needed, or the XR17L154 for 3.3V-only applications. Verify that the 64-byte FIFO depth meets the application's burst transmission requirements.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the XR17C154 family of PCI Quad UARTs, originally developed by Exar Corporation and now maintained by MaxLinear. It serves as a specialized interface solution for legacy PCI-based systems requiring robust serial connectivity. The 'IV' designation indicates the industrial temperature range variant, while 'F' typically denotes lead-free/RoHS compliant packaging.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Direct pin-compatible replacements within the same voltage family include the XR17C154CV (commercial temperature) or XR17C154IV. For dual-voltage (3.3V/5V) upgrades, consider the XR17D154 series, though pinouts and register maps may require verification. Modern PCIe alternatives like the XR17V354 offer higher performance but require significant design changes.