XR17V358IB176-F

Overview

The XR17V358IB176-F is an octal PCIe UART interface integrated circuit manufactured by MaxLinear. It provides eight independent UART channels within a single package, facilitating high-density serial connectivity for PCIe-based systems. The device supports data rates up to 31.25 Mb/s and includes a 256-byte FIFO per channel to enhance throughput efficiency. It operates on a 3.3 V power supply with a voltage range of 2.97 V to 3.63 V. The component is housed in a 176-pin FPBGA package and functions within a commercial temperature range of -40°C to +85°C.

Feature Summary

• Integrates eight fully independent UART channels into a single compact package for space-constrained designs.
• Features large 256-byte FIFO buffers per channel to minimize CPU intervention and improve data transfer reliability.
• Supports high-speed serial communication with data rates reaching 31.25 Mb/s over the PCIe bus.
• Provides flexible configuration options through software control for baud rate, data bits, stop bits, and parity.

Applications

• Industrial automation systems requiring multiple serial ports for sensor and actuator communication.
• Telecommunications infrastructure equipment needing high-channel-count serial interfaces.
• Medical devices utilizing PCIe expansion cards for diagnostic data acquisition.
• Embedded computing platforms requiring robust serial I/O expansion via PCIe slots.

Procurement Notes

Verify the specific suffix and package variant against the design requirements before ordering. Confirm that the procurement source provides genuine components with traceable documentation. Check for any recent product change notifications or lifecycle status updates from MaxLinear to ensure long-term availability for production runs.

Selection Notes

Select this component when eight UART channels are required in a PCIe environment. Compare the 256-byte FIFO depth against system latency requirements. Ensure the host system supports the necessary PCIe bandwidth for simultaneous high-speed operation of all eight channels. Verify compatibility with the intended operating system drivers.

Part Context

This part belongs to the XR17V35x series of PCIe UART controllers. It serves as a higher-channel alternative to the dual-channel XR17V352 and quad-channel XR17V354 models. The series replaces older PCI-based UART solutions like the XR17C158, offering improved performance and lower power consumption while maintaining pin-to-pin compatibility with some legacy form factors through adapter designs.

Replacement Considerations

The XR17C158IV-F is listed as a discontinued predecessor with manufacturer-recommended replacement. Other family members include the XR17V352IB113-F (2-channel) and XR17V354IB176-F (4-channel). Verify electrical and mechanical compatibility before substituting with lower-channel variants.