KSZ8864CNXIA-TR

Controllers Overview

The KSZ8864CNXIA-TR is a Layer 2 managed Ethernet switch manufactured by Microchip Technology. It integrates four 10/100 Mbps ports and two MAC interfaces (MII/RMII). The device operates within a voltage range of 1.14 V to 3.465 V and supports data rates of 10 Mb/s and 100 Mb/s. It utilizes an MII or RMII interface type and contains four transceivers. The component functions across a temperature range from -40°C to +85°C and is housed in a QFN-64 package.

Controllers Feature Summary

• Supports IEEE 802.1q VLAN with up to 128 groups and per-port tagging options.
• Includes a non-blocking switch fabric with 1.4 Gbps memory bandwidth and shared memory architecture.
• Provides comprehensive management via SPI, I2C, and SMI/MDC/MDIO interfaces for register access.

Controllers Applications

• VoIP Phone systems
• Set-Top and Game Boxes
• Automotive Ethernet applications
• Industrial Control systems

Controllers Procurement Notes

Verify the specific suffix 'A' indicates the industrial temperature grade (-40°C to +85°C) as documented in the datasheet. Confirm the '-TR' suffix corresponds to the reel packaging format. Ensure compatibility with the required power supply voltages and interface standards before finalizing procurement orders.

Controllers Selection Notes

Select this component when a managed 4-port 10/100 switch with dual MAC interfaces is required. Consider the QFN-64 package constraints and the need for external EEPROM or strapping resistors for unmanaged configuration modes. Verify that the host system can support the necessary SPI or I2C control protocols.

Controllers Part Context

This part belongs to the KSZ8864 family of integrated switches. The CNXIA variant specifically denotes the industrial temperature range version. It serves as a cost-effective solution for embedded networking, offering features like rate limiting, QoS prioritization, and port mirroring within a compact footprint.

Controllers Replacement Considerations

Public confirmed substitute: KSZ8864RMNUB. This alternative shares pin compatibility but may differ in temperature rating or automotive qualification status. Verify exact electrical characteristics and package dimensions before substitution.