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HT12D is a series decoder IC for remote control applications manufactured by Holtek. It is commonly used for radio frequency (RF) applications. Download. 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. The HT12D is a 2^12 decoder in 18 pin DIP package. This decoder is a series of CMOS LSIs for remote control system applications. It is paired with Holtek’s.

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It is very important that your Decoder should have the same address of that of the encoder. This oscillator can be used by connecting these two pins through deocder 1M Resistor. The input data code is decoded when no error or unmatched codes are found. They can also ht1d2 connected to LED to physically view the received data. Skip to main content. What is Web Browser. A basic circuit diagram for the HT12D IC bt12d shown below In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground.

This oscillator can be used by connecting these two pins through a 1M Resistor 17 Valid Transmission VT This pin will go high when a data is received.

Dscoder Module of Arduino. TL — Programmable Reference Voltage. It decoddr the serial addresses and data received by, say, an RF receiver, into parallel data and sends them to output data pins. To know how a 4-bit data can be encoded and then send to the input pin of this IC, we have to understand the working of the HT12E Encoder IC which is given here. A valid transmission in indicated by a high signal at VT pin. So if hr12d 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 serial input data is compared with the local addresses three times continuously. Choosing Motor For Robots. Submitted by admin on 27 October The IC has a built in oscillator.

HT12D is a decoder integrated ht12c that belongs to 2 12 series of decoders. This pin powers the IC should use only 5V. These are the ht12r address bits, which is used to protect your data.

Interface GPS with Arduino. It is not mandatory to use it. If you want security you can connect any of the 8 pins to 5V to make it high. HT12D is capable of decoding 12 bits, of which 8 are address bits and 4 are data bits.

So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data.

Valid transmission; active high. Connected to the Ground of circuit. The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded. Choosing Battery for Robots. The 4-bit data that is received can be obtained on pins AD0 to AD1 and an address of 8-bit has to be set using the pins A0 to A7.


If any valid cecoder is received they can be obtained from these four pins. This series of decoders decoer mainly used for remote control system applications, like burglar alarm, car door controller, security system etc. For decoding recoder data the IC will requires an oscillatorluckily this IC has one in-built. This high-density System-in-Package SiP integrates controller, power switches, and support components.

The data on 4 bit latch type output pins remain unchanged until new is received.

In the above circuit I have set the hht12d address data as 0b, by connecting all address pins to ground. Supply voltage; 5V 2.

HT12D Decoder IC

It is mainly provided to interface RF and infrared circuits. The Encoded 12 bit output data obtained from HT12E has to be given here. We should set the bits in same pattern on Encoder and Decoder IC to pair them. In simple terms, Decooder converts the serial input into parallel outputs.

Interface SD Card with Arduino. Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc.

This pin will go high when a data is received. Arduino based GPS receiver.

HT12D RF Decoder IC Pinout, Details, Equivalent & Datasheet

Virgin Galactic — Commercial Decoxer Flight. They are paired with 2 12 series of encoders. These two ICs together form an Encoder and Decoder pair.