InLink-CC is a HART protocol modem module that modulates logic level 1200 BAUD serial data onto a HART loop, and demodulates received HART data providing a 1200 BAUD serial bit stream. It allows designers to easily implement a HART compliant modem without knowledge of the HART physical layer requirements. InLink-CC interfaces to standard 3.3V logic and only requires 3 control lines; transmit, receive, and request-to-send (RTS). The InLink-CC small package size further simplifies integration into your design.

InLink-CC Data Sheet (PDF)
For a transformer isolated HART protocol modem see the InLink-TC
For transformer isolation with modbus accumulator see InLink-HM 


InLink-CC Diagram

InLink-CC Typical Application

InLink-CC Typical Application, Loop-powered HART Protocol Smart Transmitter
using the InLink-CC Modem Module 


  • Complies with HART protocol physical layer

  • Includes capacitor coupling to the HART loop

  • Complete modem module - reduces time-to-market

  • Small Footprint  - Simplifies Design Integration - 1/2 the size of the InLink-TC

  • Rugged Encapsulated Package with Gold Plated Pins for Increased Reliability

  • Through-hole or Socket Mounting

  • 2.7V to 3.6V Operating Voltage

  • Industrial Temperature Range -40°C to +85°C

  • Transmit Signal Wave-Shaping - Sinusoidal with Lowest Harmonic Distortion

  • Receive Band-Pass Filter and Digital Processing for Reliability in Noisy Conditions

  • CMOS Compatible

  • Low Power 300uA Typical

  • Evaluation board available