1894KI-43LF

Overview

The Renesas Electronics Corporation 1894KI-43LF is a low-power physical-layer device (PHY) supporting ISO/IEC 10Base-T and 100Base-TX standards. It operates within a supply voltage range of 3.14V to 3.47V and functions at data rates of 10 Mb/s and 100 Mb/s. The component utilizes a 40-TQFN package with an exposed pad, suitable for surface-mount installation. It complies with RoHS3 specifications and maintains an operating temperature range of -40°C to 85°C.

Feature Summary

• Supports 10Base-T and 100Base-TX Ethernet standards
• Low-power physical-layer controller design
• Integrated single transceiver functionality

Applications

• Ethernet network interface implementation
• Industrial communication systems
• Embedded networking devices

Procurement Notes

Verify the specific package variant and suffix against official Renesas documentation to ensure compatibility with design requirements. Confirm current availability status as product lifecycle changes may affect supply. Check for any recent Product Change Notifications regarding assembly sites or material updates prior to ordering.

Selection Notes

Select this component for applications requiring standard Ethernet PHY connectivity with low power consumption. Ensure the host system supports the required 3.3V logic levels and provides adequate thermal management for the TQFN package. Verify that the interface protocol matches the target network architecture requirements.

Part Context

This part belongs to the 1894KI series of Ethernet PHY controllers from Renesas. It serves as a physical layer solution for connecting digital systems to twisted-pair Ethernet networks. The series is designed for cost-effective and reliable network integration in various electronic equipment.

Replacement Considerations

Consult official Renesas substitution guides for verified alternatives. Generic cross-references are not confirmed substitutes.