14212R-500

Overview

The Renesas Electronics Corporation model 14212R-500 is an FT 3120-E4S40 Free Topology Smart Transceiver. It integrates a Neuron 3120 network processor core with a twisted pair transceiver compliant with ANSI/CEA 709.3-1999. The device supports a transmission speed of 78 kilobits per second and operates at a maximum input clock frequency of 40MHz. It includes 4Kbytes of embedded EEPROM, 2Kbytes of RAM, and 12Kbytes of ROM. The component utilizes a 32-lead SOIC package and functions within a -40 to +85°C operating temperature range on a 5V supply.

Feature Summary

• Integrates a Neuron 3120 network processor core with a free topology twisted pair transceiver for system-on-a-chip functionality.
• Supports polarity insensitive wiring configurations including star, daisy chain, bus, loop, or mixed topologies.
• Provides flexible I/O capabilities through 11 pins configured across 34 programmable standard modes.
• Features advanced noise protection via external communication transformers ensuring immunity from magnetic interference.

Applications

• Building automation systems
• Industrial control networks
• Transportation management applications
• Utility metering infrastructure

Procurement Notes

Verify the specific ordering suffix R indicates RoHS compliance against European Directive 2002/95/EC. Confirm that the required FT-X1 or FT-X2 communication transformer is sourced separately as these components are mandatory for operation. Ensure the design accommodates the 32-lead SOIC package dimensions and thermal requirements specified in the datasheet.

Selection Notes

Select this model when a compact 32-lead SOIC form factor is required alongside the full 4Kbyte application memory capacity of the Neuron 3120 core. This part is suitable for designs needing 40MHz processing speeds without the need for external memory interfaces found in the FT 3150 series. Verify compatibility with existing TP/FT-10 channel parameters preprogrammed at 10MHz.

Part Context

This component belongs to the FT 3120 and FT 3150 Free Topology Smart Transceiver family produced by Echelon Corporation, now associated with Renesas Electronics. These devices were designed to replace older Neuron chips by combining processing and physical layer transmission into a single integrated circuit. The 14212R-500 specifically denotes the RoHS-compliant version of the FT 3120-E4S40 in the 32-lead SOIC package.

Replacement Considerations

The non-RoHS compliant equivalent is model 14211-500. Both share identical electrical characteristics and pinouts. When replacing legacy FTT-10A transceivers, ensure the new design incorporates the mandatory FT-X1 or FT-X2 communication transformer to maintain warranty coverage and signal integrity.