11500R-5000

Overview

The 11500R-5000 is a Pyxos FT network chip manufactured by Echelon Corporation, designed for embedded control networking. It integrates the Pyxos protocol and transceiver in a 20-pin QFN 5mm x 5mm package. The device operates at 312.5kbps with deterministic response times of ≤25ms for up to 32 points. It supports Link Power over twisted pair wiring and features forward error correction with an 18-bit packet CRC. Operating voltage is 3.3V ±10%, with a temperature range of -40°C to +85°C. It includes four digital I/Os and interfaces via SPI.

Feature Summary

• Self-organizing network architecture that configures automatically without special tools or skilled labor
• Deterministic high-speed operation suitable for closed-loop controls and fast-response sensing applications
• Robust noise immunity with multiple coupling options including transformer-isolated configurations
• Link Power capability allowing simultaneous data and power transmission over a single wire pair

Applications

• HVAC systems and lighting controls
• Automotive vehicular controls and propulsion systems
• Industrial fault monitors and burner/boiler controls
• Security, fire/life safety devices, and elevator cab controls

Procurement Notes

Verify the manufacturer designation as Echelon Corporation rather than Renesas Electronics Corporation when sourcing this component. Confirm the specific ordering suffix corresponds to the tape and reel packaging format required for automated assembly processes. Ensure compatibility with the 3.3V operating voltage and check for necessary isolation components if deploying in high common-mode noise environments.

Selection Notes

Select this component for applications requiring ultra-compact sensor integration and deterministic network scanning speeds. Consider the direct connect, non-isolated, or transformer-isolated coupling options based on the expected common-mode voltage levels. Evaluate the need for hosted versus unhosted Pyxos Points depending on whether external microcontroller processing is available for complex I/O requirements.

Part Context

This part belongs to the Pyxos platform family introduced by Echelon for stand-alone or LonWorks extending networking applications. It serves as a low-cost embedded control networking chip intended for use inside machines and for extending control networks to high-performance sensor and actuator I/O buses.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The 11500R-300 is listed as a dry pack variant of the same communication IC but represents different packaging rather than a functional replacement.