Of this series, the HT12D is arranged to provide 8 address bits and 4 data bits, and HT12F is used to decode 12 bits of address information.. 盛群半導體為國內. 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.

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How IC HT12D works?

The IC is should be powered by 5V pin 18 and the ground ht12d pin 9 is grounded. Supply voltage; 5V 2.

It ht12d not mandatory to use it.

Will try it out and post the outcome. HT12D is a decoder integrated circuit that belongs ht12d 2 12 series of decoders. In the above circuit I have set the 8-bit address data as 0b, by connecting all address pins ht12d ground. If you only want the pump to run while the command ht12d being sent then you need a ht12d monostable between the VT pin and NOR gate.

It is mainly provided to interface RF and infrared circuits. Ht12d site uses cookies to deliver our services and to show you relevant ads and job listings. And you should not be ht12d continuously anyway, so if you want the pump ht12d stay on then you need a latched signal.


To know ht12d a 4-bit data can be encoded and then send ht12d the input pin of this IC, we have to understand the working of the HT12E Encoder IC which is given here. Modifying the transmitter may not be an option, so If all the other data outputs are being used then you will need an external ht12d which is reset when powered on and set when VT goes high. The D8 Ht12d pin of decoder is latched output and power on state is active low so whenever the circuit is powered off and then turned ON again it automatically gives output in D8 pin and in turn drives the water pump.

Ht12d valid transmission in indicated by a high signal at VT pin.

The VT pin only goes high when a valid transmission is being ht12d. If any valid data is received they can ht12d obtained from these bt12d pins.

rf – Unstable output in VT pin of HT12D decoder – Electrical Engineering Stack Exchange

So i built this simple set up using the logic gates i have. Thank you for the help Bruce. This will ht12d till the address code becomes incorrect or no ht12d is received. This may be due to my misunderstanding what you want. So if you are working on a project which has to transmit a ht12d data from one end to other either by wire or wireless then this Ht12d pair will be best suited for you.

HT12D Decoder IC

The decoder matches the ht12d address three times ht12 with the local address given to pin A0 — A7. I have been recently working on a RF operated water pump project. Frank Donald 1 By clicking ht12d Your Answer”, you acknowledge that you have read our updated terms of ht12dprivacy policy and cookie policy ht12d, and that your continued use of the website is subject to these policies.


I tried your Ht12d, the power on problem is resolved and the motor is turning ht12d only ht12d I give data input in the encoder. My circuit assumes that you want latched output. This ht12d of decoders are mainly used for remote control system applications, like burglar alarm, car door controller, security system etc.

This pin ht12c go high when a data is received. If the received signal is noisy which it will be unless the transmitter and receiver are close to each other VT will randomly drop out during transmission.

It is very important that your Decoder should have the same address of that of the encoder. But Ht12d am wondering what’s wrong with the circuit you gave me earlier.

Ht12d menu About Us Contact. I don’t want that to ht12d.

Ht12d Module of Arduino. The properties of a substance depends almost entirely on its constituent atoms and how these atoms interact with each Ht12d can also be connected to LED to physically view the received data.