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HT12D Datasheet

  • HT12D

  • 212Series of Decoders

  • 12頁

  • HOLTEK

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2
Features
路
路
路
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路
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12
Series of Decoders
Address/Data number combination
-
HT12D: 8 address bits and 4 data bits
-
HT12F: 12 address bits only
Built-in oscillator needs only 5% resistor
Valid transmission indicator
Easy interface with an RF or an infrared
transmission medium
Minimal external components
Operating voltage: 2.4V~12V
Low power and high noise immunity CMOS
technology
Low standby current
Capable of decoding 12 bits of information
12
Pair with Holtek壟s 2 series of encoders
Binary address setting
Received codes are checked 3 times
路
路
路
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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 2 decoders are a series of CMOS LSIs for
remote control system applications. They are
12
paired with Holtek壟s 2 series of encoders (re-
fer to the encoder/decoder cross reference ta-
bl e ). For p rop er oper a ti on, a pa ir of
encoder/decoder with the same number of ad-
dresses and data format should be chosen.
The decoders receive serial addresses and data
12
from a programmed 2 series of encoders that
are transmitted by a carrier using an RF or an
IR transmission medium. They compare the se-
rial input data three times continuously with
12
their local addresses. If no error or unmatched
codes are found, the input data codes are de-
coded and then transferred to the output pins.
The VT pin also goes high to indicate a valid
transmission.
The 2 series of decoders are capable of decod-
ing informations that consist of N bits of ad-
dress and 12-N bits of data. Of this series, the
HT12D is arranged to provide 8 address bits
and 4 data bits, and HT12F is used to decode 12
bits of address information.
12
Selection Table
Function Address
No.
Part No.
HT12D
HT12F
8
12
Data
No.
4
0
Type
L
戮
VT
脰
脰
Oscillator
Trigger
Package
RC oscillator DIN active
虜Hi虜
18 DIP/20 SOP
RC oscillator DIN active
虜Hi虜
18 DIP/20 SOP
Notes: Data type: L stands for latch type data output.
VT can be used as a momentary data output.
1
July 12, 1999

HT12D PDF文件相關(guān)型號(hào)

HT12F

HT12D 產(chǎn)品屬性

  • 解碼器

  • 低功率和高噪音抗???CMOS技術(shù)；能夠解碼12位信息

  • 2.4V 到 12V

  • -20°C 到 +75°C

  • DIP

  • 18

  • No SVHC (19-Dec-2011)

  • 12

  • 12

  • DIP

  • -20°C

  • 75°C

  • 12V

  • 2.4V

  • 200μA

  • 12

  • Remote Control Decoder

  • 通孔安裝

  • 12

  • 遙控解碼器/編碼器

  • 12

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