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HT604 Datasheet(PDF) 1 Page - Holtek Semiconductor Inc |
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HT604 Datasheet(HTML) 1 Page - Holtek Semiconductor Inc |
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1 / 9 page  HT604L/614/692 318 Series of Decoders 1 April 24, 2000 Features · Operating voltage: 2.4V~12V · Low power and high noise immunity CMOS technology · Low standby current · Capable of decoding 18 bits of information · Pairs with Holtek¢s318 series of encoders · 9~10 address pins · 2~8 data pins · Trinary address setting · Two times of receiving check · Built-in oscillator needs only a 5% resistor · Valid transmission indicator · Easy interface with an RF or an infrared transmission medium · Minimal external components · Package information: refer to Selection Table General Description The 318 decoders are a series of CMOS LSIs for remote control system applications. They are paired with the 318 series of encoders. For proper operation, a pair of encoder/decoder pair with the same number of address and data for- mat should be selected (refer to the encoder/de- coder cross reference tables). The 318 series of decoders receive serial address and data from that series of encoders that are transmitted by a carrier using an RF or an IR transmission medium. It then compares the se- rial input data twice continuously with its local address. If no errors or unmatched codes are encountered, the input data codes are decoded and then transferred to the output pins. The VT pin also goes high to indicate a valid transmis- sion. The 318 decoders are capable of decoding 18 bits of information that consists of N bits of address and 18-N bits of data. To meet various applica- tions they are arranged to provide a number of data pins whose range is from 0 to 8 and an ad- dress pin whose range is from 8 to 18. In addi- tion, the 318 decoders provide various combinations of address/data number in differ- ent packages. 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 |
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