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

HT12D is capable of decoding 12 bits, of which 8 are address bits and 4 are data bits. A valid transmission in indicated by decodeer high signal at VT pin. The serial input data is compared with the local addresses three times continuously.

They can also be connected to LED to physically view the received data. For decoding a data the IC will requires an oscillatorluckily this IC has one in-built. This series of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system etc.


These are the 8-bit address bits, which is used to protect your data. 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 pin powers the IC should use only 5V. What decodre Web Browser. Valid transmission; active high.


The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded. The IC has a built in oscillator. If any cecoder data is received they can be obtained from these four pins.

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HT12D Decoder IC | HT12D Datasheet | Pin Diagram

Skip to main content. If you want security you can connect any of the 8 pins to 5V to make it high.

Arduino based GPS receiver. This high-density System-in-Package SiP integrates controller, power switches, and support components. It decodes the serial addresses and data received by, say, an RF receiver, into parallel data and sends them to output data pins. HT12D is a decoder integrated circuit that belongs to 2 12 series of decoders. The 4-bit data that is received can be obtained on pins AD0 to AD1 and an address of 8-bit has defoder be set using the pins A0 to A7.

The data on 4 bit latch type output pins remain unchanged until new is received. Interface GPS with Arduino. These two ICs together form an Encoder and Decoder pair. Supply voltage; 5V 2. We should set the bits in same decoded on Encoder and Deoder IC to pair them. Virgin Galactic — Commercial Space Flight. 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.


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. Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc. So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data.

This oscillator can be used by connecting these two ht1d2 through a 1M Resistor. Submitted ht21d admin on 27 October 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. SPI Module of Arduino. Choosing Motor For Robots. decodef