29-01-2013, 12:13 PM
HOLTEK
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Features
•Operating voltage:
– 2.4V~5V for the HT12A/B/C
– 2.4V~12V for the HT12E/EA
•Low power and high noise immunity CMOS
technology
•Low standby current: 0.1A (Typ.) at
VDD=5V
•HT12A/B/C with a 38kHz carrier for infrared
transmission medium
•Minimum transmission word:
– Four words for the HT12E/EA
– One word for the HT12A/B/C
•Built-in oscillator needs only 5% resistor
•Data code polarity:
– HT12A/C/E/EA: Positive polarity
– HT12B: Negative polarity
•Minimal external components
•18-pin DIP or 20-pin SOP package available
for HT12A/12B
•14/18-pin DIP or 16/20-pin SOP or 16-pin
NSOP package available for HT12E
•16/18-pin DIP or 16/20-pin SOP package
available for HT12C