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

Features:

• 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: 0.1uA (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

Package: 18-DIP

Datasheet: https://www.farnell.com/datasheets/1899539.pdf