HT12E DIP-18 Encoder

The 212 encoders are a series of CMOS LSIs for remote
control system applications. They are capable of encoding
information which consists of N address bits and
12-N data bits. Each address/data input can be set to
one of the two logic states. The programmed addresses/
data are transmitted together with the header
bits via an RF or an infrared transmission medium upon
receipt of a trigger signal. The capability to select a TE
trigger on the HT12E or a DATA trigger on the HT12A
further enhances the application flexibility of the 212 series
of encoders. The HT12A additionally provides a
38kHz carrier for infrared systems.

Operating voltage
2.4V~5V for the HT12A
2.4V~12V for the HT12E
Low power and high noise immunity CMOS technology
Low standby current: 0.1A (typ.) at VDD=5V
HT12A with a 38kHz carrier for infrared transmission medium
Minimum transmission word
Four words for the HT12E
One word for the HT12A
Built-in oscillator needs only 5% resistor
Data code has positive polarity
Minimal external components
Pair with Holtek's 212 series of decoders
18-pin DIP