HT12D 2 12 Series of Decoders Features. Operating voltage: V~12V Low power and high noise immunity CMOS Built-in oscillator needs only 5% resistor. For proper operation, a pair of encoder/decoder with the same number of Of this series, the HT12D is arranged to provide 8 address bits and 4 data bits, and. IC HT12D can be used only with its pair HT12E. These two ICs together form an Encoder and Decoder pair. They are bit.

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This high-density System-in-Package SiP integrates controller, power switches, and support components.

Connected to the Ground of circuit. Photograph just for reference.

In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. It is mainly provided to interface RF and infrared circuits.

Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc. It is very important that your Decoder should have the same address of that of the encoder. Found this item with same quality and at a lower price but prefer to buy from robokits.

For decoding a data the IC will requires an oscillator, luckily this IC has one in-built. TL — Programmable Reference Voltage.


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. The primary function of HT12E is to encode a bit and send it out through the output pin.

Easy Interface with and RF or an Infrared transmission medium. Mercury ball tilt switch 5mm dia. The Encoded 12 decooder output data obtained from HT12E has to be given here. Choosing Motor For Robots. The data on 4 bit latch type output pins remain unchanged until new is received. You can know to set up the HT12D after this from here. TL — Programmable Reference Voltage.

The IC has a built in oscillator. We should set the bits in same pattern on Encoder and Decoder IC to pair them. Valid transmission; active high.

HT12D Decoder IC

This oscillator can be used by connecting these two pins through a 1M Resistor. In this image I have made all four data bits as zero lowwhen this is decoded we will get the same kind of bits on the output side of HT12D, similarly we can make any changes on these 4-bits and they will be reflected on the output side of the HT12D decoder IC.

Pull the Transmission Enable pin pin 14 to ground to activate transmission. This pin will go high when a data is received. The input data code is decoded when no error or unmatched codes are found. HT12D is capable of decodre 12 datashete, of which 8 are address bits and 4 are data bits.


Submitted by admin on 30 October This series of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system etc. The IC is has a wide range of operating voltage from 2. If any valid data is received they can be obtained from these four pins.

HT12D RF Decoder IC Pinout, Details, Equivalent & Datasheet

Choosing Battery for Robots. The Encoded 12 bit output data can be obtained from this pin.

These two ICs together form an Encoder and Decoder pair. These two ICs together form an Encoder and Decoder pair.

HT12D/HT12F – Product Details – Holtek

Arduino based GPS receiver. They are paired with 2 12 series of encoders. This ICs are paired with each other. The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded. Skip to main content.