14315R-100

Overview

The Renesas Electronics Corporation 14315R-100 is a Router 5000 chip designed for building high-performance half-routers in LONWORKS control networks. Based on the Neuron 5000 core, it operates at a clock rate up to 40 MHz with a typical input frequency of 10 MHz. The device supports a supply voltage range of 3.0 V to 3.6 V (typical 3.3 V) and functions within an ambient temperature range of -40°C to +85°C. It is housed in a compact 7mm x 7mm 48-pin QFN package with exposed pad. Current consumption varies from 9 mA to 52 mA depending on the operating mode and clock speed.

Feature Summary

• Transceiver-independent design allowing connection to external transceivers running at various LonWorks bit rates from 610 bps to 1.25 Mbps.
• Logical isolation between two half-routers improves system reliability by isolating failures between channels.
• Supports four routing algorithms: Configured router, Learning router, Bridge, or Repeater.
• Transparent multi-channel and multi-media support for mixed physical media installations.

Applications

• Building high-performance half-routers for LONWORKS control networks.
• Increasing scalability and survivability of industrial control networks.
• Lowering installation costs by enabling mixed physical media in single installations.

Procurement Notes

Verify component authenticity through authorized distributors as the part is marked End-of-Life with a discontinuation date of March 28, 2025. Confirm RoHS compliance status and check for available stock from secondary markets if immediate procurement is required. Ensure ordering suffixes match specific packaging requirements such as tape and reel or cut tape formats.

Selection Notes

Select this component when designing LONWORKS routers requiring logical isolation between network channels. Consider the need for external EEPROM up to 2 KB for storing router parameters. Evaluate the choice of external transceiver type, such as TP/FT-10 or TP/XF-1250, to determine compatible transmission speeds and interface requirements for the specific application topology.

Part Context

This component is part of the Router 5000 series, originally developed by Echelon Corporation and later acquired by Renesas Electronics. It serves as a specialized interface IC for LonWorks communication channels, enabling the creation of intelligent routers that forward messages based on destination addresses without modifying application programs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the product is discontinued, engineers should evaluate alternative LONWORKS networking solutions or consult manufacturer recommendations for legacy system maintenance.

FAQ

What routing algorithms does the 14315R-100 support?

The chip supports four routing algorithms: Configured router, Learning router, Bridge, and Repeater.

Can the 14315R-100 be used with any transceiver?

It is compatible with all LonWorks transceivers, including standard types for free topology, link power, twisted pair, and power line, provided they operate within the specified bit rate range.

How is the router configuration managed?

Router configuration is automatically managed by network server tools based on LNS Server, allowing changes over the installed network without physical access to the device.