HT12D/HT12F -- 2^12 Series Of Decoders

The 212 decoders are a series of CMOS LSIs for remote control system applications. They are paired with Holtek's 212 series of encoders (refer to the encoder/decoder cross reference table). For proper operation, a pair of encoder/decoder with the same number of addresses and data format should be chosen.
The decoders receive serial addresses and data from a programmed 212 series of encoders that are transmitted by a Carrier using an RF or an IR transmission medium. They compare the serial input data three times continuously with their local addresses. If no error or unmatched codes are found, the input data codes are decoded and then transferred to the output pins. The VT pin also goes high to indicate a valid transmission.
The 212 series of decoders are capable of decoding informations that consist of N bits of address and 12-N bits of data. 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.
By Holtek Semiconductor Inc.
HT12D 's PackagesHT12D 's pdf datasheet
HT12F

HT12D pdf datasheet download


HT12D Pinout, Pinouts
HT12D pinout,Pin out
This is one package pinout of HT12D,If you need more pinouts please download HT12D's pdf datasheet.

HT12D Application circuits
HT12D circuits
This is one application circuit of HT12D,If you need more circuits,please download HT12D's pdf datasheet.


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HT12D Pb-Free HT12D Cross Reference HT12D Schematic HT12D Distributor
HT12D Application Notes HT12D RoHS HT12D Circuits HT12D footprint
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