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.

Author: Fezahn Vukus
Country: South Africa
Language: English (Spanish)
Genre: Art
Published (Last): 1 May 2014
Pages: 266
PDF File Size: 5.53 Mb
ePub File Size: 1.4 Mb
ISBN: 598-3-93481-982-5
Downloads: 26709
Price: Free* [*Free Regsitration Required]
Uploader: Goltilrajas

What is Web Browser. This oscillator can be used by connecting these two pins through a 1M Resistor 17 Valid Devoder VT This pin will go high when a data is received. We should set the bits in same pattern on Encoder and Decoder IC to pair them. In simple terms, HT12D converts the serial input into parallel outputs.

It is not ht1d to use it. The data on 4 bit latch type output pins remain unchanged until new is received.

HT12D Decoder IC

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

If you want security you can connect any of the 8 pins to 5V to make it high. They can also be connected to Yt12d to physically view the received data.


Virgin Galactic — Commercial Space Flight. For decoding a data the IC will requires an oscillatorluckily this IC has one in-built. SPI Module of Arduino. 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. Interface SD Ht12c with Arduino.

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. These are the 8-bit address bits, which is used to protect your data. It decodes the serial addresses and data received by, say, an RF receiver, into parallel data and sends them to output data pins. A valid transmission in indicated by a high signal at VT pin.

These two ICs together form an Encoder and Decoder pair. The Encoded 12 bit output data obtained from HT12E has to be given here.

HT12D Decoder IC | HT12D Datasheet | Pin Diagram

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 series of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system etc.

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. Can be used in Home automation for short range remote switching Safety systems like Burglar alarm system, Smoke or Fire alarm system etc. This pin powers the IC should use only 5V. HT12D is a decoder integrated circuit that belongs to 2 12 series of decoders.


They are paired with 2 12 series of encoders. Valid transmission; active high. This pin will go high when a data is received.

Choosing Battery for Robots. This high-density System-in-Package SiP integrates controller, power switches, and support components. It is mainly provided to interface RF and infrared circuits. So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data.

The serial input data is compared with the local addresses three times continuously. Choosing Motor For Robots. The input data code is decoded when no error or unmatched codes are found. This oscillator can be used by connecting these two pins through a 1M Resistor. Supply voltage; 5V 2. Connected to the Ground of circuit. TL — Programmable Reference Voltage.

Interface GPS with Arduino. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins to ground. Arduino based GPS receiver. Skip to main content. The IC has a built in oscillator. Submitted by admin on 27 October