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