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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This series of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system decodeer. These are the 8-bit address bits, which is used to protect your data. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. Virgin Galactic — Commercial Space Flight.

They can also be connected to LED to physically view the received data. Choosing Motor For Robots. SPI Module of Arduino. These two ICs together form an Encoder and Decoder pair. They are paired with 2 12 series of encoders. Supply voltage; 5V 2. It is not mandatory to use edcoder. Submitted by admin on 27 October Choosing Battery for Robots.

A valid transmission in indicated by a high signal at VT pin.

Interface SD Card with Arduino. A basic circuit diagram for the HT12D IC is ht12s below In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins secoder ground. The serial input data is compared with the local addresses three times continuously. What is Web Browser. The Encoded 12 bit output data obtained from HT12E has to be given here.

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HT12D is capable of decoding 12 bits, of which 8 are address bits and 4 are data bits. The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded.

This pin powers the IC should use only 5V. This oscillator can be used by connecting these two pins through a 1M Resistor. We should set the bits in same pattern on Encoder and Decoder IC to pair them. In simple terms, HT12D converts the serial decover into parallel outputs. It is mainly provided to interface RF and infrared circuits. If any valid data is received they can be obtained from these four pins.

It is very important that your Decoder should have the same address of that of the encoder. For decoding a data the IC will requires an oscillatorluckily this IC has one in-built. Arduino based Decodet receiver.

HT12D Decoder IC

Interface GPS with Arduino. Skip to main content. The input data code is decoded when no error or unmatched codes are found.

The IC has a built in oscillator. Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc.

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. The data on 4 bit latch type output pins remain unchanged until new is received. 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. This oscillator can be used by connecting these two pins through a 1M Resistor 17 Valid Decodr VT This pin will go high when a data is received.


Valid transmission; active high. So out of the bits 8-bits will be used to set address decodeer the remaining 4-bit will be used to transmit data. It decodes the serial addresses deoder 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.

Connected to the Ground of circuit.

HT12D RF Decoder IC Pinout, Details, Equivalent & Datasheet

If you want security you can connect any of the 8 pins to 5V to make it high. TL — Programmable Reference Voltage.

HT12D is a decoder integrated circuit that belongs to 2 12 series of decoders. This high-density System-in-Package SiP integrates controller, power switches, and support components. This pin will go high when a data is received.