HT12E Encoder IC

The 212 encoders are a series of CMOS LSI'S 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.

Images/Pinout of HT12E Encoder IC

Features of HT12E Encoder IC

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

Applications of HT12E Encoder IC

• Burglar alarm system.
• Smoke and fire alarm system.
• Garage door controllers.
• Car door controllers.
• Car alarm system.
• Security system.
• Cordless telephones.
• Other remote control systems.

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