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. IC HT12D can be used only with its pair HT12E. These two ICs together form an Encoder and Decoder pair. They are bit. HT12D Datasheet, HT12D Holtek Decoder Datasheet, buy HT12D Decoder IC.

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The IC has a built in oscillator. If any valid data is received they can be obtained from these four pins. This oscillator can ht1d2 used by connecting these two pins through a 1M Resistor.

HT12D Decoder IC

Submitted by admin on 27 October The data on 4 bit latch type output pins remain unchanged until new is received. Valid transmission; active high. 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.


This pin will go high when a data is received. Supply voltage; 5V 2. HT12D is capable of decoding 12 bits, of which 8 are address dataseet and 4 are data bits. Choosing Battery for Robots.

Connected to the Ground of circuit. These are the 8-bit address bits, which is used to protect your data. If you want security you can connect any of the 8 pins to 5V to make it high. It decodes the serial addresses and data received by, say, an RF receiver, into parallel data and hf12d them to output data pins. 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.


Choosing Motor For Robots. For decoding a data the IC will requires an oscillatorluckily this IC has one in-built. Interface SD Card with Arduino. These two ICs together form an Encoder and Decoder pair. A basic circuit diagram for the HT12D IC is shown below In the above circuit Datasheft have set the 8-bit address data as 0b, by connecting all address pins to ground. They are paired with 2 12 series of encoders.

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. Virgin Galactic — Commercial Space Flight.

The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded. The Encoded 12 bit output data obtained from HT12E has to be given here. What is Web Browser.

HT12D Decoder IC | HT12D Datasheet | Pin Diagram

Can be used in Home automation for short range remote switching Safety systems like Burglar alarm datashet, Smoke or Fire alarm system etc. They can also be connected to LED to physically view the received data.

In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. A valid transmission in indicated by a high signal at VT pin. It is not mandatory to use it.


This high-density System-in-Package SiP integrates controller, power switches, and support components. We should set the bits in same pattern on Encoder and Decoder IC to pair them. 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.

Skip to main content. Interface GPS with Arduino. The input data code is decoded when no error or unmatched codes are found. This pin powers the IC should use only 5V.

In simple terms, HT12D converts the serial input into parallel outputs. HT12D is a decoder integrated circuit that belongs to 2 12 series of decoders.

SPI Module of Arduino.

HT12D/HT12F – Product Details – Holtek

The serial input data is compared with the local addresses three times continuously. 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 series of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system etc. It is very important that your Decoder hg12d have the same address of that of the encoder.

TL — Programmable Reference Voltage. It is mainly provided to interface RF and infrared circuits. Arduino based GPS receiver.