HT12A/HT12E -- 2¹² Series ofEncoders

General Description

The 2¹²encoders are a series of CMOS LSIs for remote control systemapplications. They are capable of encoding information whichconsists of N address bits and 12-N data bits. Each address/datainput can be set to one of the two logic states. The programmedaddresses/data are transmitted together with the header bits via anRF or an infrared transmission medium upon receipt of a triggersignal. The capability to select a TE trigger on the HT12E or aDATA trigger on the HT12A further enhances the applicationflexibility of the 2¹² series ofencoders. The HT12A additionally provides a 38kHz carrier forinfrared systems. 

Features Operating voltage - 2.4V~5V for the HT12A - 2.4V~12V for the HT12E Low power and high noise immunity CMOS technology Low standby current: 0.1uA (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 Pair with Holtek's 212 series of decoders 18-pin DIP, 20-pin SOP package

技术相关信息 DataSheet RevisionHistory 封装信息 18-pinDIP 封装 20-pin SOP封装 问答集 应用范例 其它相关信息 SelectionGuide 产品型号索引