The IC HT12D can be used only with its pair HT12E. These two ICs together form an Encoder and Decoder pair. They are 12-bit Encoders/Decoders, meaning they can transmit 12-bit a data among them. But your encoder IC should not communicate with someone else’s decoder IC, so an Encoder and Decoder IC pair will share a common Address which is an 8-bit data. So out of the 12-bits 8-bits will be used to set address and the remaining 4-bit will be used to transmit data. With 4-bit data we can create 16 types (2^4 =16) of combinations. These IC’s are commonly used with RF pairs or IR pairs. 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.
Specifications:
- 12-bit Decoder IC to be used with HT12E
- Decoded data has 4 Data bits and 8 Address bits (8+4=12-bits)
- Commonly used for RF and IR wireless transmission
- Operating Voltage 5V
- Low stand by current of 0.1uA at Vcc=5V
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