The HT12D Decoder 212 series of decoders provides various combinationsof addresses and data pins in different packagesso as to pair with the 212 series of encoders.The decoders receive data that are transmitted by anencoder and interpret the first N bits of code period asaddresses and the last 12N bits as data, where N is theaddress code number. A signal on the DIN pin activates the oscillator which in turn decodes the incoming addressand data. The decoders will then check the received address three times continuously. If the received
address codes all match the contents of the decoderslocal address, the 12N bits of data are decoded to activatethe output pins and the VT pin is set high to indicatea valid transmission. This will last unless the address
code is incorrect or no signal is receive
Features of HT12D Decoder
- Operating voltage: 2.4V~12V
- Input Voltage:VSS-0.3 to VDD+0.3V
- Storage Temperature:50°C to 125°C
- Operating Temperature :20C to 75C
- Operating voltage: 2.4V~12V
Low power and high noise immunity CMOS
technology
Low standby current
Capable of decoding 12 bits of information
Binary address setting
Received codes are checked 3 times
Address/Data number combination
HT12D: 8 address bits and 4 data bits
HT12F: 12 address bits only
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