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. HT12DDIP Ic-remote Control Decoder Features. Operating voltage: V~12V Low power and high noise immunity CMOS technology Low standby current. IC HT12D can be used only with its pair HT12E. These two ICs together form an Encoder and Decoder pair. They are bit.
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Gone are the days when we used to use wires to connect two devices to establish a communication path. This is an CMOS logic integrated circuit encoder.
HT12D/HT12F – Product Details – Holtek
Basically found in applications of remote control systems. Used for interfacing RF circuits generally MegaHz. This IC hasmany applications in short range remote controlling.
HT12E IC has four bit parallel data inputwhich it then converts to serial data output. In additional to itit also has 8 address lines which can generally be grounded along with the pin number 9.
Whenever an active low signal is applied at its TE pin then only the parallel data gets transferred serially at the output, hf12d the IC is in high impedance state. At low signal data is transferred via antenna and received by Receiver IC which then decodes it to original parallel data.
These pins are generally shorted by a resistor. Generally a resistor of value 51 KOhms can be used. Thus this helps in setting up oscillations in the IC. This pin outputs the parallel data serially.
An LED can also be connected datashset this terminal to indicate output. After one complete cycle of data transfer the pin TE goes in high impedance state, thus indicating 1 cycle of data transfer.
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