IC HT12D can be used only with its pair HT12E. These two ICs together form an Encoder and Decoder pair. They are bit Encoders/Decoders, meaning they. HT12D is a series decoder IC for remote control applications manufactured by Holtek. It is commonly used for radio frequency (RF) applications. Download. Buy HOLTEK HT12D online at Newark element Buy your HT12D from an authorized HOLTEK distributor.

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One of the basic element ht12dd every electronic device is the transistor. But it has a major drawback that 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.

HT12D Decoder IC | HT12D Datasheet | Pin Diagram

Supply voltage; 5V 2. Atmospheric Vortex Engine Twister Power. HT12D — Block Diagram. HT12D is capable of decoding 12 bits, of which 8 are address bits and 4 are data bits. The input data code is decoded when no error or unmatched codes are found. It is very important that your Decoder should have the same address of that of the encoder.


These 12 bit parallel data is divided in to 8 address bits and 4 data bits. Valid transmission; active high. HT12D simply converts serial data to its input may be received through RF receiver to 12 bit parallel data.

This pin powers the IC should use only 5V. HT12D — Pin Diagram.

It has built in oscillator, we need to connect only a small external resistor. Hf12d decoder matches the received address three times continuously with the local address given to pin A0 — A7.

It is commonly used for radio frequency RF wireless applications. Choosing Motor For Robots. Top menu About Us Contact. The device starts decoding the input address and data. So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data. Skip to main content. This pin will go high when a data is received. These are the 8-bit address bits, which is used to protect your data.

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

They can also be connected to LED to physically view the received data. HT12D is a decoder integrated circuit that belongs to 2 12 series of decoders.

HT12D Decoder IC for Remote Control Systems

For decoding a data the IC will requires an oscillator, luckily this IC has one in-built. Choosing Battery for Robots. If you want security you can connect any of the 8 pins to 5V to make it high. It is not mandatory to use it. The primary function of HT12E is to decode the bit that is received by the input pin. Top menu About Us Advertise.


It is mainly provided to interface RF and infrared circuits. Skip to main content. Its power consumption is low and has high immunity against noise. Contents1 Components Required2 Circuit Diagram2. In simple terms, HT12D converts the serial input into parallel outputs. Latest Blogs Web Browsers: Interface GPS with Arduino.

The IC is should be powered by 5V pin 18 and the ground pin pin 9 is grounded.

Hh12d IC has a built in oscillator. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. The received data is checked 3 times for more accuracy. Thus the oscillator will be active when the decoder receives data transmitted by an encoder.