11500R-300

Overview

The Renesas Electronics Corporation 11500R-300 is a Pyxos FT network chip designed for embedded control networking. It operates at a fixed transmission speed of 312.5 kbps with a deterministic response time of ≤25ms for up to 32 points. The device supports Link Power, delivering communication and power over the same twisted pair wires. It features polarity-insensitive free topology wiring and robust noise immunity, including ESD protection exceeding 8kV HBM on network pins. The chip integrates an SPI interface for microcontroller connectivity and provides four digital I/Os. It functions within an operating voltage range of 3.3V ±10% and an ambient temperature range of -40°C to +85°C.

Feature Summary

• Self-organizing network architecture that configures automatically without specialized tools or skilled labor
• Deterministic high-speed operation suitable for closed-loop controls in industrial applications
• Link Power capability allows simultaneous data transmission and power delivery over a single wire pair
• Exceptional common mode noise and interference immunity across various coupling options

Applications

• HVAC systems
• Lighting systems
• Burner and boiler controls
• Security and fire/life safety devices
• Elevator cab and floor call controls

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging details. The 11500R-300 designation corresponds to a dry pack configuration containing five tubes. Ensure compatibility with required isolation components such as the TMS80040CS transformer if transformer-isolated coupling is necessary for the application environment.

Selection Notes

Select this component for applications requiring ultra-compact smart devices with minimal external microcontroller dependency. The integrated digital I/Os allow direct connection to sensors and actuators. Consider the available coupling options based on the expected common mode noise levels in the installation environment.

Part Context

This part belongs to the Pyxos platform introduced by Echelon for stand-alone or LonWorks extending networking applications. The Pyxos FT network consists of up to 32 Pyxos Points embedded inside sensors and actuators, interfacing with a Pyxos Pilot to connect to higher-level networks like LonWorks or the Internet.

Replacement Considerations

The 11500R-5000 variant serves as an alternative packaging option for the same functional device, provided in a tape and reel package instead of the dry pack format.