HT12E + HT12D (Encoder & Decoder Pair) + DIP 18 Pin IC Base
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HT12E + HT12D (Encoder & Decoder Pair) + DIP 18 Pin IC Base

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  • Product SKU: KG169
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Specification

Description

The HT 12E Encoder ICs are a series of CMOS LSIs for Remote Control system applications. It is low Power and High Noise Immunity, CMOS Technology.
They are capable of Encoding 12 bits of information which consists of N address bits and 12-N data bits. Each address/data input is externally trinary programmable if bonded out.

The HT 12D ICs are a series of CMOS LSIs for remote control system applications. These ICs are paired with each other. For proper operation, a pair of encoder/decoders with the same number of addresses and data format should be selected. The Decoder receives the serial address and data from its corresponding decoder, transmitted by a carrier using an RF transmission medium, and gives output to the output pins after processing the data.

Technical Details HT12D (RF Decoder)  

  • 18-pin DIP
  • Operating Voltage : 2.4V ~ 12.0V
  • Low Power and High Noise Immunity, CMOS Technology
  • Low Stand by Current: 0.1uA (Typ.) at VDD=5V
  • Capable of Decoding 12 bits of Information
  • 8 ~ 12 Address Pins and 0 ~ 4 Data Pins
  • Received Data is checked 3 times
  • Built-in Oscillator needs only 5% resistor
  • Easy Interface with an RF or an Infrared transmission medium
  • Compatible with the HT12E encoder IC

Technical Details HT12E (RF Encoder)  

  • 18-pin DIP
  • Operating Voltage : 2.4V ~ 12V
  • Low Power and High Noise Immunity, CMOS Technology
  • Low Standby Current: 0.1uA (Typ.) at VDD=5V
  • Minimum Transmission Word = 4
  • Built-in Oscillator needs only 5% Resistor
  • Data code has a positive polarity
  • Easy Interface with and RF or an Infrared transmission medium
  • A secure and robust protocol
  • Compatible with the HT12D decoder IC

Features 

  • 12-bit Decoder IC to be used with HT12E
  • Decoded data has 4 Data bits and 8 Address bits (8+4=12-bits)
  • Commonly used for RF and IR wireless transmission
  • Operating Voltage 5V
  • Low stand by the current of 0.1uA at Vcc=5V
  • 12-bit Encoder IC to be used with HT12D
  • Encoded data has 4 Data bits and 8 Address bits (8+4=12-bits)
  • Commonly used for RF and IR wireless transmission
  • Wide supply voltage range from 2.4V to 12V, typically 5V is used
  • Low stand by the current of 0.1uA at Vcc=5V

Physical Attributes

  • Length * Width * Height  (mm) : 21 * 17.8 * 2.5 mm
  • Weight (gm) : 2

HT12D RF Decoder IC

Pin Number Pin Name Description
1 to 8 A0,A1,A2,A3,A4,A5,A6 & A7 These are the 8-bit address bits, which is used to protect your data. We should set the bits in same pattern on Encoder and Decoder IC to pair them.
9 Ground/Vss Connected to the Ground of circuit
10 to 13 ADO, AD1, AD2 & AD3 These four pins are used to obtain the data bits by decoding the data from HT12E IC
14 Input The Encoded 12 bit output data obtained from HT12E has to be given here
15 and 16 Oscillator pins 1 & 2 The IC has a built in oscillator. This oscillator can be used by connecting these two pins through a 1M Resistor
17 Valid Transmission (VT) This pin will go high when a data is received. It is not mandatory to use it.
16 Vcc/vdd This pin powers the IC should use only 5V

How to use an HT12D?

HT12E RF Encoder IC

Pin Number Pin Name Description
1 to 8 A0,A1,A2,A3,A4,A5,A6 & A7 These are the 8-bit address bits, which is used to protect your data. We should set the bits in same pattern on Encoder and Decoder IC to pair them.
9 Ground/Vss Connected to the Ground of circuit
10 to 13 ADO, AD1, AD2 & AD3 These four pins are used to send data, the data encoded here will be decoded on HT12D IC sharing the same address bits.
14 Transmission Enable(TE) This pin has to be connected to Ground (OV) to enable the Transmission.
15 and 16 Oscillator pins 1 & 2 The IC has a built in oscillator. This oscillator can be used by connecting these two pins through a 1M Resistor.
17 Output The Encoded 12 bit output data can be obtained from this pin.
16 Vcc/vdd This pin powers the IC, typically +5V is used. Can range from 2.4V to 12V.

How to use an HT12E?

Applications 

  • Wireless Security Systems
  • Burglar Alarm Systems
  • Smoke Alarm Systems
  • Fire Alarm Systems
  • Car Security / Alarm Systems
  • Garage Door Controllers
  • Car Door Controllers
  • Cordless Telephone Systems
  • Other Remote Control Systems
  • Automation Systems

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Customer Reviews

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l
lok nath
These are perfect to multiplex multiple outputs on one data line.

I'm using them with the cheap 433MHz RF links and they work great. Four outputs over the single RF link.