Holtek Semiconductor HT6187
The 3 encoders are a series of CMOS LSIs for remote control system applications. They are capable of encoding 18 bits of information which consists of N address bits and 18-N data bits.FEATURES
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● Operating voltage: 2.4V~12V Low power and high noise immunity CMOS technology Low standby current Three words transmission
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● Built-in oscillator needs only 5% resistor Easy interface with an RF or infrared transmission media Minimal external components
APPLICATIONS
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● Burglar alarm system Smoke and fire alarm system Garage door controllers Car door controllers
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● Car alarm system Security system Cordless telephones Other remote control systems
GENERAL DESCRIPTION
Each address/data input is externally trinary programmable if bonded out. It is otherwise set floating internally. Various packages of 18 the 3 encoders offer flexible combinations of 18 programmable address/data to meet various application needs. The programmable address/data is 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 type or a DATA trigger type further enhances the appli18 cation flexibility of the 3 series of encoders.