HT12D (2^12 Series of Decoders)

Description

HT12D Pin?Configuration Pin Number Pin Name Description 1 to 8 A0,A1,A2,A3,A4,A5,A6 & A7 These are the 8-bit address bits, which is used to protect your data. We should set the bits in same pattern on Encoder and Decoder IC to pair them. 9 Ground/Vss Connected to the Ground of circuit 10 to 13 AD0, AD1, AD2 & AD3 These four pins are used to obtain the data bits by decoding the data from HT12E IC 14 Input The Encoded 12 bit output data obtained from HT12E has to be given here 15 and 16 Oscillator pins 1 & 2 The IC has a built in oscillator. 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. It is not mandatory to use it. 16 Vcc/Vdd This pin powers the IC should use only 5V Features 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 Available in 16-pin DIP, 20-pin SOP Note:?Complete Technical Details can be found at the?HT12D datasheet?given?at the end of this page. HT12D Equivalent Decoder PT2272, 74C922 Where to use HT12D 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 p