HT12E & HT12D Encoder and Decoder IC for RF Modules

Encoder and decoder ics for sending and receieving 4 channnels using RF modules Transmitter and Receiver.


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The HT 12E Encoder ICs are series of CMOS LSIs for Remote Control system applications. They are capable of Encoding 12 bit of information which consists of N address bits and 12-N data bits. Each address/data input is externally trinary programmable if bonded out.

The HT 12D ICs are series of CMOS LSIs for remote control system applications. This ICs are paired with each other. For proper operation a pair of encoder/decoder with the same number of address and data format should be selected. The Decoder receive the serial address and data from its corresponding decoder, transmitted by a carrier using an RF transmission medium and gives output to the output pins after processing the data.



  • 18 PIN DIP
  • Operating Voltage : 2.4V ~ 12V
  • Low Power and High Noice Immunity CMOS Technology
  • Low Standby Current and Minimum Transmission Word
  • Built-in Oscillator needs only 5% Resistor
  • Easy Interface with and RF or an Infrared transmission medium
  • Miniml External Comonents



  • Burglar Alarm, Smoke Alarm, Fire Alarm, Car Alarm, Security System
  • Garage Door and Car Door Controllers
  • Cordless telephone
  • Other Remote Control System



HT12E Datasheet
HT12D Datasheet

  • 18 PIN DIP, Operating Voltage : 2.4V ~ 12.0V
  • Low Power and High Noice Immunity, CMOS Technology
  • Low Stand by Current, Trinary address setting
  • Capable of Decoding 12 bits of Information
  • 8 ~ 12 Address Pins and 0 ~ 4 Data Pins
  • Received Data are checked 2 times, Built in Oscillator needs only 5% resistor
  • VT goes high during a valid transmission
  • Easy Interface with an RF of IR transmission medium
  • Minimal External Components

    * - Price excluding sales tax and shipping
  • Model: RKI-1065

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