1894KI-33LF

Overview

The Renesas Electronics Corporation 1894KI-33LF is an Ethernet IC categorized as a 10/100 PHY. It operates with a maximum supply voltage of 3.3 V and supports data rates of 10 Mb/s and 100 Mb/s. The device contains one transceiver and utilizes the RMII interface. It is housed in a QFN-32 EP package designed for SMD/SMT installation. This component belongs to the 1894KI series and is identified by the alias ICS1894KI-33LF.

Feature Summary

• Supports 10/100 Base-T/TX Ethernet standards
• Integrates a single physical layer transceiver
• Utilizes Reduced Media Independent Interface (RMII) connectivity

Applications

• Ethernet network interface implementation
• Industrial communication systems
• Consumer networking hardware

Procurement Notes

This component is officially discontinued and no longer in production. Verification should focus on historical datasheets and discontinuance notices rather than current availability. Engineers must confirm that legacy documentation aligns with original design specifications before considering any remaining stock or alternative sourcing channels.

Selection Notes

Designers requiring active components should evaluate the 1894K-32LFT or 1894KI-40LFT, which share similar PHYceiver architecture but differ in pin count and operating temperature ranges. Ensure the replacement part matches the required interface type and voltage specifications to maintain system compatibility without redesigning the PCB layout.

Part Context

The 1894KI-33LF is part of the broader 1894KI family of Ethernet controllers from Renesas. These devices are engineered for cost-effective integration into embedded systems requiring reliable 10/100 Mbps connectivity. The specific suffix indicates the voltage variant and package configuration within this product line.

Replacement Considerations

Public confirmed substitute part numbers include 1894K-32LFT and 1894KI-40LFT.