Holtek Semiconductor HT12B
the HT12A/B/C – 2.4V~12V for the HT12E • Low power and high noise immunity CMOS technology • Low stand-by current • Minimum transmission word: – Four words for the HT12E – One word for the HT12A/B/C Applications • Burglar alarm system • Smoke and fire alarm system • Garage door controllers • Car door controllers General Description 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.| Part No. | HT12B |
|---|---|
| Datasheet | HT12B Download |
| Manufacturer |  Holtek Semiconductor |
| Description | Encoder |
| Buy | Stock & Price |
FEATURES
● Operating voltage: – 2.4V~5V for The programmed addresses/data are transmitted together with the header bits● A built-in oscillator with only a 5% resistor
● HT12A/B/C with a 38KHz carrier for Infra- Red transmission medium
● Data code polarity: – HT12A/C/E: Positive polarity – HT12B: Negative polarity
● Minimal external components
● Car alarm system
● Security system
● Cordless telephones
● Other remote control systems via an RF or an Infra-Red 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/B/C further enhances the application flexibility of the 212 series of encoders. The HT12A/B/C additionally provides a 38KHz carrier for Infra-Red systems. Selection Table 1 15th Mar ’96 Block Diagram TE trigger HT12E 212 Series of Encoders DATA trigger HT12A/B/C Note: The address data pins are available in various combinations (refer to the address/data table). 2 15th Mar ’96 212 Series of Encoders...
