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 decodes the serial addresses and data received by, say, an RF receiver, into parallel data and sends them to output data pins.

Choosing Battery for Robots. A basic circuit diagram for the HT12D 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. This series of decoders are mainly used for remote control system applications, like burglar deocder, car door controller, security system etc.

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. Supply voltage; 5V 2. Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc. TL — Programmable Reference Voltage. HT12D is a decoder ut12d circuit that belongs to 2 12 series of decoders.



It is mainly provided to interface RF and infrared circuits. If you want security you can connect any of the 8 pins to 5V to make it high. Choosing Motor For Robots. For decoding a data the IC will decoderr an oscillatorluckily this IC has one in-built.


The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded. HT12D is capable of decoding 12 bits, of which decodfr are address bits and 4 are data bits.

The serial input data is compared with the local addresses three times continuously. These are the 8-bit address bits, which is used to protect your data. This pin will go decodeg when a data is received. Interface SD Card with Arduino. A valid transmission in indicated by a high signal at VT pin. So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data.

The IC has a built in oscillator. This oscillator can be used by connecting these two pins through a 1M Resistor. These two ICs together form an Encoder and Decoder pair. It is very important that your Decoder should have the same address of that of the encoder. It is not mandatory to use it.

Submitted by admin on 27 October In simple terms, HT12D converts the serial input into parallel outputs. The input data code is decoded when no error or unmatched codes are found.

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. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. This high-density Gt12d SiP integrates controller, power switches, and support components.


The Encoded 12 bit output data obtained from HT12E has to be given here.

HT12D Decoder IC | HT12D Datasheet | Pin Diagram

They are paired with 2 12 series of encoders. What is Web Browser. Virgin Deoder — Commercial Space Flight. This pin powers the IC should use only 5V. Arduino based GPS receiver. Interface GPS with Arduino. If any valid data is received they can be obtained from these four pins.

SPI Module of Arduino. Skip to main content. 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 Decoded to A7.

HT12D RF Decoder IC Pinout, Details, Equivalent & Datasheet

They can also be connected to LED to physically view the received data. The data on 4 bit latch type output pins remain unchanged until new is received. Valid transmission; active high.

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.