HT12D is a series decoder IC for remote control applications manufactured by Holtek. It is commonly used for radio frequency (RF) applications. Download. HT12D. 8. 4. L. Ö. RC oscillator DIN active ²Hi² 18 DIP/20 SOP .. The information appearing in this Data Sheet is believed to be accurate at the. HT12DDIP Ic-remote Control Decoder Features. Operating voltage: V~12V Low power and high noise immunity CMOS technology Low standby current.

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We should set the bits in same pattern on Encoder and Decoder IC to pair them. As you want the LEDs to be on when the data outputs are low you’ll also need inverters such as a on the data lines: Valid transmission; active high.

HT12D Decoder IC | HT12D Datasheet | Pin Diagram

Submitted by admin on 27 October The datwsheet 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. The IC has a built in oscillator.

It decodes the serial addresses and data received by, say, an RF receiver, into parallel datzsheet and sends them to output data pins. 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. Please submit the url of the better price you saw.

When data is being transmitted continously the VT line will stay high while valid data is being received.

The Encoded 12 bit output data obtained from HT12E has to be given here. They don’t show a maximum so maybe it has current limiting, but some further buffering of the data lines is probably in order.


They can also be connected to LED to physically view the received data.

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 ht12x pins to ground. A typical quad NAND gate normally has a drive of mA check the datasheet for the particular part you choose and should be a suitable choice.

Choosing Battery for Robots. I have made following project using a Holtek HTD decoder:. Customers who bought this product also purchased The Decoder receive the serial address and data from its corresponding decoder, transmitted by a carrier using an RF transmission medium and gives output to the output pins after processing the data.

Virgin Galactic — Commercial Space Flight. The serial input data is compared with the local addresses three times continuously. Easy to Use, Versatile Robotics Kits Can you provide a link to the receiver. Thanks a lot for helping us to maintain competitive prices.

TB Stepper Motor Driver 4. My ht1d2 is that when I press any switch on the transmitter and cut power to the transmitter by holding push switch, the receiver end is still showing a LED output.

Sign up using Email and Password. This pin will go high when a data is received. The IC is should dtaasheet powered by 5V pin 18 and the ground pin pin 9 is grounded. So out of the bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data. As you dagasheet the LEDs to be on when the data outputs are low you’ll also need inverters such as a on the eatasheet lines:. 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.


The data on 4 bit latch type output pins remain unchanged until new is received. They are capable of Encoding 12 bit of information which consists of N address bits and N data bits.

HT12D is capable of decoding 12 bits, of which 8 are address bits and 4 are data bits. It is not mandatory to use it.

HT12D Decoder IC

SPI Module hg12d Arduino. This high-density System-in-Package SiP integrates controller, power switches, and support components. This pin powers the IC should use only 5V. This doesn’t surprise me. If I remove the battery from the transmitter, the doors remain unlocked. A valid transmission in indicated by a high signal at VT pin.

In simple terms, HT12D converts the serial input into parallel outputs. TL — Programmable Reference Voltage. This series of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system etc. Photograph just for reference. If that’s a problem with your application you’ll need a way to introduce a delay into VT going low, maybe a simple diode and RC arrangement would do the datasheett but see how this goes for a start.

If any valid data is received they can be obtained from these four pins.

Found this item with same quality and at a lower price but prefer to buy from robokits. What is Web Browser. You could also use a microcontroller if you’re familiar with programming them and you could even replace the whole HTD with one if you decoded the protocol.

Interface GPS with Arduino. Choosing Motor For Robots. The input data code is decoded when no error or unmatched codes are found.