1894KI-40LF

Overview

The Renesas Electronics Corporation 1894KI-40LF is an Ethernet physical layer controller designed for 10/100 Base-T/TX applications. It operates within a supply voltage range of 3.14V to 3.47V and supports data rates of 10 Mb/s and 100 Mb/s. The component utilizes a parallel interface and is housed in a 40-VFQFPN package with dimensions of 6x6 mm, featuring exposed pads. It is rated for industrial operating temperatures from -40°C to 85°C. This device belongs to the PHYceiver™ series and functions as a single transceiver for Ethernet communication protocols.

Feature Summary

• Integrated 10/100 Base-T/TX physical layer controller functionality
• Supports parallel interface connectivity for system integration
• Industrial temperature rating for robust environmental operation

Applications

• Ethernet network interface design
• Industrial communication systems
• Embedded networking hardware

Procurement Notes

Verify the specific suffix 'LF' against official Renesas documentation to confirm lead-free compliance status. Ensure the 40-VFQFPN package variant matches the target PCB footprint requirements. Cross-reference the datasheet revision history for any recent manufacturing site changes or material updates that may affect compatibility.

Selection Notes

Select this component when a dedicated 10/100 Mbps Ethernet PHY with parallel interface is required. Confirm that the 3.3V nominal supply voltage aligns with the system power architecture. Verify that the 40-pin VFQFPN package size fits within the available board space constraints compared to alternative pin counts.

Part Context

This part is part of the Renesas 1894KI series, which includes variants like the 1894K-32LFT. It serves as a specialized interface solution for Ethernet connectivity. The manufacturer lists it under Ethernet ICs and Communication & Networking ICs categories, indicating its role in data link layer physical implementation.

Replacement Considerations

The 1894KI-40LFT is a listed alias for this component. Check for availability of the 1894K-32LFT if a smaller 32-pin package is acceptable, noting the interface and temperature range differences.