The HT12E is a 2^12 encoder in 18 pin DIP package. This is CMOS LSI for remote control system applications. It is capable of encoding information which. Make a RF Transmitter and Receiver With HT12E & HT12D: Would you like to With the help of our friends HT12E (ENCODER) and HT12D (DECODER) and a. Dec 8, HT12E is an encoder integrated circuit of 2 12 series of encoders. They are paired with 2 12 series of decoders for use in remote control system.

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This high-density System-in-Package SiP integrates controller, power switches, and support components.

Thank you for the reply and clarification. SPI Module of Arduino.

It encodes the 12 bit parallel data into serial for transmission through an RF transmitter. Rod, No we are limited to address per pair. You encoedr know to set up the HT12D after this from here.

Interface SD Card with Arduino. TL — Programmable Reference Voltage.

HT12E Encoder IC | HT12E Datasheet | Pin Diagram & Description

Hope it is clear now. In this image I have encoxer all four data bits as zero lowwhen this is decoded we will get the same kind of bits on the output side of HT12D, similarly we can make any changes on these 4-bits and they will be reflected on the output side of the HT12D decoder IC.


The above diagram shows the practical set up of the HT12E encoder IC for better understanding on the working. Simply put, HT12E converts the parallel inputs into serial output. Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc.

These 12 bits are divided into 8 address bits and 4 data bits. For decoding a data the IC will requires an oscillator, luckily this IC has one in-built.


If you need more address I suggest you to look for any other encoders and decoders with more address combinations.

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Thank you and I will let you know the working of the circuit. Dohab, To be honest this is entirely up to your requirement. Why do we put a resistor between two pins of oscillator viz. Thank you for your reply. Can range from 2. Newer Post Older Post Home. However if you need to have more address combinations then you might want to look for other encoder-decoder pair available in the market. Notify of all new follow-up comments Notify of new replies to all my comments.

What is Web Browser. It is mainly used in interfacing RF and infrared circuits. Dear Frank Donald, Thank you for the reply and clarification.

If you want security you can connect any of the 8 pins to 5V to make it high. HT12E has a transmission enable pin which is active low. As soon as TE returns to high, the encoder output completes its final cycle and then stops.


Calculating addresses, we are limited to 56 addresses per pair.

Connected to the Ground of circuit. It is very important that your Decoder should also have this same address for them to talk to each other. There is no use of that IC here. The above diagram shows the hh12e set up of the HT12E encoder IC for better understanding on the working. Request you idea on this.

Basic Electronics: HT12E Encoder

In ht12d decoder section, i am changing the address by giving delay. This pin has to be connected to Ground 0V to enable the Ht12w. The encoded bit can be obtained from the Dout pin pin Posted by Palakkumar Patel at But if i want to transmit data in 5th encoder, in which pin of encoder sholud i provide data to encoder???

So if you are working on a project which has to transmit a 4-bit data from one end to other either by wire or wireless then this IC pair will be best suited for you. The IC is has a wide range of operating voltage from 2.