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HT604L Datasheet

  • HT604L

  • 318Series of Decoders

  • 13頁

  • HOLTEK

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HT604L/614/692
3
18
Series of Decoders
Features
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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壟s 3
18
series of encoders
9~10 address pins
2~8 data pins
Trinary address setting
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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
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
The 3
18
decoders are a series of CMOS LSIs for
remote control system applications. They are
paired with the 3
18
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 3
18
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 3
18
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 3
1 8
decoders provide various
combinations of address/data number in differ-
ent packages.
1
April 24, 2000

HT604L PDF文件相關(guān)型號(hào)

HT614,HT692

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