HT 12F

The 21(2) decoders are a series of CMOS LSIs for remote control system applications. They are paired with Holtek's 21(2) series of encoders (refer to the encoder/decoder cross reference table). For proper operation, a pair of encoder/decoder with the same number of addresses and data format should be chosen. 

HT 12F Applications

•  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

Features 

• Operating voltage: 2.4V~12V 
• Low power and high noise immunity CMOS technology 
• Low standby current 
• Capable of decoding 12 bits of information 
• Binary address setting 
• Received codes are checked 3 times 
• Address/Data number combination 
• HT12D: 8 address bits and 4 data bits 
• HT12F: 12 address bits only 
• Built-in oscillator needs only 5% resistor 
• Valid transmission indicator 
• Easy interface with an RF or an infrared transmission medium 
• Minimal external components
• Pair with Holteks 212 series of encoders 
• 18-pin DIP, 20-pin SOP package

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