1894K-33LFT

Overview

The Renesas Electronics Corporation 1894K-33LFT is an Ethernet PHY controller designed for 10/100 Base-T/TX applications. It operates with a supply voltage range of 3.14V to 3.47V and supports data rates of 10 Mb/s and 100 Mb/s. The device integrates one transceiver and utilizes an RMII interface. It is housed in a 32-VFQFPN package with exposed pad, measuring 5x5 mm. The component functions within a commercial temperature range of 0°C to 70°C and complies with RoHS3 standards.

Feature Summary

• Integrated physical layer controller supporting 10/100 Base-T/TX Ethernet standards
• Utilizes Reduced Media Independent Interface (RMII) for digital connection
• Single transceiver architecture for compact system integration

Applications

• Ethernet network interface design
• Industrial communication systems
• Consumer networking equipment

Procurement Notes

Verify the specific suffix '33' against official datasheets to confirm voltage compatibility, as this variant differs from the widely documented '32' version. Check for Product Change Notifications regarding package or assembly site updates. Confirm availability status through authorized channels due to potential lifecycle changes.

Selection Notes

Select this component when a 3.3V nominal supply is required for the Ethernet PHY section. Ensure the host processor supports the RMII interface protocol. Verify that the 32-VFQFPN footprint matches the PCB layout constraints. Compare thermal performance requirements against the specified operating temperature range.

Part Context

This part belongs to the 1894K series of Ethernet PHY controllers from Renesas. It shares functional similarities with other variants in the family, such as the 1894K-32LFT, primarily differing in supply voltage specifications. The series is designed for cost-effective Ethernet connectivity solutions.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate pin-compatible alternatives only after verifying electrical parameter alignment, particularly supply voltage ranges and interface protocols.