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

12N 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 Holteks 212 series of decoders

18-pin DIP