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FT 3120® and FT 3150® Free

Topology Smart Transceivers

Features

• Combines an ANSI/CEA 709.3-1999 compliant free topology twisted pair

transceiver with a Neuron 3120 or Neuron 3150 network processor core

• Supports polarity insensitive free topology star, daisy chain, bus, loop, or

mixed topology wiring

• 78 kilobits per second bit rate for distances up to 500 meters

in free topology or 2700 meters in bus topology with double terminations

• High performance Neuron network processor core enables concurrent pro-

cessing of application code and network

packets (40MHz maximum for FT 3120 smart transceiver, 20MHz maximum

for FT 3150 smart transceiver)

• 4Kbytes of embedded EEPROM for application code and configuration data

on the FT 3120 smart transceiver and 0.5Kbytes of embedded EEPROM for

configuration data on the FT 3150 smart transceiver

• Interface for external memory for devices with larger memory requirements

(FT 3150 smart transceiver only)

• 2Kbytes of embedded RAM for buffering network data and network variables

• 11 I/O pins with 34 programmable standard I/O modes minimizing external in-

terface circuitry

• Unique 48-bit Neuron ID in every device for network installation and manage-

ment

• Compact external transformer with patent pending

architecture providing exceptional immunity from magnetic interference and

high frequency common mode noise

• Compatible with TP/FT-10 channels using FTT-10 and/or FTT-10A Free Topol-

ogy Transceivers and, with suitable DC blocking capacitors, LPT-10 Link

Power Transceivers

• Communications parameters preprogrammed for the TP/FT-10 channel at

10MHz

• 5V operation with low power consumption

• -40 to +85°C operating temperature range[3, 4

FT 3120 transceiver in a 44-pin TQFP

package[1]