HT12D Decoder IC
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HT12D Decoder IC

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Product Overview

HT12D is. This collection of decoders are mainly used for remote control system software, like burglar alarm, automobile door control, security system etc.. It's mainly provided to port circuits and RF. They're paired with series of encoders. The pair of encoder/decoder should have same number of addresses and data structure. Basically, the serial input is converted by HT12D into parallel outputs. It sends them and decodes the addresses and information obtained by, say, an RF receiver, into parallel data. The serial input data is compared with all the local addresses three occasions continuously. When no error or unmatched codes are located, the input code is deciphered. A transmission in signaled by a high signal . HT12D is capable of decoding 12 bits, of which 8 are address bits and 4 are information bits. The data on 4 piece latch type output pins remain unchanged until fresh is obtained.


Features

Operating voltage
2.4V~12V
Low power and high noise immunity CMOS technology
Low standby current
Capable of decoding 12 bits of information
Binary address setting
Received codes are checked 3 times
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
Pair with Holteks 212 series of encoders
18-pin DIP, 20-pin SOP package

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