HT12E is a series encoder IC (Integrated Circuit) for remote control applications. It is commonly used for radio frequency (RF) applications. By using the. HT12E Encoder IC can be used only with its pair HT12D. These two ICs together form an Encoder and Decoder pair. The HT12E Encoder IC starts working by giving enable signal to the Transmission Enable pin. The 4-word data will be encoded until the TE pin.

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I have a doubt. Can be used in Home automation for short range remote switching Safety systems ht12r Burglar alarm system, Smoke or Fire alarm system etc.

Regarding the addressing you can use i simple switch to feed your desired address. Transmission enable; active low.

No mechanical switching involved. The above diagram shows the practical set up of the HT12E encoder IC for better understanding on the working. The encoder and decoder should use the same address and data format.

There is no use of that IC here. Dear Frank Thank you for your reply. The query I raised about is dynamic addressing i. If the TE pin retains the low signal the cycle repeats as long as the h12e signal in the TE pin exists. It is ht2e important that your Decoder should also have this same address for them to talk to each other. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground.

Supply voltage; 5V 2. Dear Frank Donald, Thank you icc the reply and clarification. Thank you for your reply. If you need more address I suggest you to look for any other encoders and decoders with more address combinations. The encoded bit can be obtained from the Dout pin pin The encoder IC will be in standby mode if the TE pin is disabled and thus the status of this pin was necessary for encoding process.


These four pins are used to send data, the data encoded here will be decoded on HT12D IC sharing the same address bits. In ht12d decoder section, i am changing the address by giving delay. I have 5v 12d cut and 12v 12e ckt. SSS, As per the datasheet you need that resistor to kick start the internal oscillator in the chip which in turn feeds clock pulse to data transmission.

This data should be sent to the HT12D for decoding, it can either be sent directly through a wire or by using a wireless medium like RF or IR. Notify of all new follow-up comments Notify of new replies to all my comments. Where are the input pins on the ic I would like to connect a potentiometer to the input on the ic for rc car. Dohab, To be honest this is entirely up to your requirement.

HT12E Encoder IC Pin Diagram, Uses, Equivalents & Datasheet

The IC is has a wide range of operating voltage from 2. These are the 8-bit address bits, which is used to protect your data.

The primary function of HT12E is gt12e encode a bit and send it out through the output pin. The following two tabs change content below. But if i want to transmit data in 5th encoder, in which pin of encoder sholud i provide data to encoder??? A basic connection diagram for the HT12E IC is shown below In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground.


Gunasekaran, Am not sure about what you are asking.

HT12E Encoder IC

This high-density System-in-Package SiP integrates controller, power switches, and support components. TL — Programmable Reference Voltage. Submitted by admin on 30 October The 4-bit data that has to be sent has ht12ee be given to the pins AD0 to AD1 and an address of 8-bit has to be set using the pins A0 to A7.

ULN was a transistor array IC used for driving high power devices. Using the address pins we can provide 8 bit security code for secured data transmission between the encoder and the decoder. HT12E is an encoder integrated circuit of 2 12 series of encoders.

Request you idea on this. Video games, blogging and programming are the things he loves most. Choosing Battery for Robots. It encodes the 12 bit parallel data into serial for transmission through an RF transmitter. As soon as TE returns to high, the encoder output completes its final cycle and then stops.

This oscillator can be used by connecting these two pins through a 1M Resistor. You can know to set up the HT12D after this from here.