Manufacturer: Microchip Technology
Key Specifications
- Package: 48-pin QFN (7x7mm)
- Core: 10/100 Mbps Ethernet PHY
- Interface: MII, RMII
- Voltage: 3.3V (I/O), 1.8V/2.5V/3.3V (VDDIO)
- Temperature: -40°C to 85°C (industrial)
- Data Rate: 10/100 Mbps
- Compliance: IEEE 802.3u
- Features: Auto-MDIX, MDC/MDIO
The KSZ8081RNBCA-TR from Microchip Technology is a single-port 10BASE-T/100BASE-TX Ethernet physical layer transceiver designed for embedded applications requiring reliable network connectivity. It integrates all the analog and digital circuitry needed for PHY functions, offering a compact and cost-effective solution for system-on-chip (SoC) or microcontroller-based designs.
Key Features
- Supports 10BASE-T and 100BASE-TX Ethernet standards (IEEE 802.3u compliant)
- Flexible host interfaces: Media Independent Interface (MII) and Reduced Media Independent Interface (RMII)
- Auto-negotiation and auto-MDIX for simplified cabling
- Low power consumption with 3.3V core supply and selectable I/O voltage (1.8V/2.5V/3.3V)
- Industrial temperature range (-40°C to 85°C) for harsh environments
- Management interface (MDC/MDIO) for configuration and status monitoring
- Built-in loopback and diagnostic features for testing
- Available in a 48-pin QFN package (7x7 mm) for space-constrained designs
Applications
- Industrial control and automation
- Embedded networking devices (e.g., IoT gateways, smart meters)
- Home and building automation
- Test and measurement equipment
- Security and surveillance systems
Selection Guidance
When selecting the KSZ8081RNBCA-TR, consider the required host interface (MII or RMII) and the I/O voltage level compatible with your controller. The device supports both 10 and 100 Mbps speeds, making it suitable for legacy and modern Ethernet applications. For detailed electrical specifications and design guidelines, refer to the official datasheet and application notes from Microchip Technology.
