1894K-34LFT

Overview

The 1894K-34LFT is a physical-layer controller manufactured by Renesas Electronics Corporation, belonging to the PHYceiver series. It supports 10/100 Base-T/TX Ethernet standards and utilizes a parallel interface for data transmission. The device operates within a supply voltage range of 3.14V to 3.47V and functions at temperatures between 0°C and 70°C. It is housed in a 34-VFQFPN package with dimensions of 5x5 mm and includes an exposed pad for thermal management. This component serves as a dedicated transceiver for Ethernet network applications.

Feature Summary

• Supports Auto-MDIX functionality to automatically correct crossover errors in plant wiring without additional discrete logic.
• Incorporates Digital-Signal Processing (DSP) control in its Physical-Medium Dependent sub layer for error reduction.
• Provides a Serial Management Interface for exchanging command and status information with Station Management entities.

Applications

• Ethernet network nodes requiring integrated physical layer connectivity.
• Industrial automation systems utilizing 10/100 Mbps Ethernet communication.
• Embedded devices needing low-power PHY solutions with DSP-based signal integrity.

Procurement Notes

Verify the exact suffix against official Renesas documentation to confirm pinout compatibility and package variations. Check for Product Change Notifications regarding assembly sites or material updates. Confirm current lifecycle status as discontinuation notices may affect long-term availability. Ensure RoHS compliance matches specific regional regulatory requirements before procurement.

Selection Notes

Select this component when a parallel interface PHY is required for 10/100 Base-T applications. Compare pin counts carefully; the 34-pin variant differs from the 32-pin 1894K-32LFT. Verify that the host system provides adequate power supply stability within the specified voltage range. Consider thermal dissipation requirements due to the exposed pad design in the VFQFPN package.

Part Context

This part belongs to the ICS1894K family of Ethernet PHY controllers. It shares architectural similarities with other members like the 1894K-32LFT but differs in package configuration and pin assignment. The series is designed for cost-effective integration into Ethernet-enabled consumer and industrial electronics.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Renesas sales offices for qualified alternatives if this component becomes obsolete.