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HT12E Holtek Encoder 12-Bit (for RF Remote Control)
HT12E Holtek Encoder 12-Bit (for RF Remote Control)
HT12 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
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- Operating voltage: 2.4V - 12V
- Case: HT12A/E: 18-pin DIP
- 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

Applications
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- RF Remote Control
- 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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MT8870 - DTMF Decoder Receiver
MT8870 - DTMF Decoder Receiver
Used for decoding DTMF tones. Great for building RF remote controls to control different devices like robots, RC Cars / RC Planes / RC Helicopters or just controlling different appliances in your house.

Specifications:
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- Voltage Supply: 2.5 - 5V
- Case: DIP18
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Price: $4.95
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