HT12B Holtek, HT12B Datasheet
HT12B
Related parts for HT12B
HT12B Summary of contents
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... A built-in oscillator with only a 5% resistor HT12A/B/C with a 38KHz carrier for Infra- Red transmission medium Data code polarity: – HT12A/C/E/EA: Positive polarity – HT12B: Negative polarity Minimal external components Car alarm system Security system Cordless telephones Other remote control systems 12 Carrier ...
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Block Diagram TE trigger HT12E/EA www.DataSheet4U.com DATA trigger HT12A/B/C Note: The address data pins are available in various combinations (refer to the address/data table Series of Encoders 23rd Aug ’96 ...
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Pin Description Pin Name A0~A7 www.DataSheet4U.com AD8~AD11 D2~D11 DOUT L/MB TE OSC1 OSC2 X1 X2 VSS VDD Note: D2~D11 are all data input and transmission enable pins of the HT12A/B/ transmission enable pin of the HT12E/EA. Internal ...
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Approximate internal connection circuits NMOS TRANSMISSION GATE OSCILLATOR www.DataSheet4U.com Absolute Maximum Ratings Supply Voltage (HT12A/B/C) ....... –0.3V to 5.5V Input Voltage.................... V Operating Temperature............... – Electrical Characteristics HT12A/B/C Symbol V Operating Voltage DD ...
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HT12E Symbol V Operating Voltage DD I Stand-by Current STB I Operating Current DD I Output Drive Current DOUT V "H" Input Voltage IH www.DataSheet4U.com V "L" Input Voltage IL F Oscillator Frequency OSC R TE Pull-High Resistance TE Test ...
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Functional Description Operation 12 The 2 series of encoders begins a 4 word transmission cycle upon receipt of a transmission enable (TE for the HT12E/EA or D2~D11 for the HT12A/B/C, active low). This cycle will repeat itself as long as ...
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... The HT12B data code polarity is inverted: The address/data bits of the HT12A/B/C are transmitted with a 38KHz carrier for Infra-Red re- mote controller flexibility. Fig.5 Address/Data bit waveform for the HT12E/EA Fig.6 Address/Data bit waveform for the HT12A/C Fig.7 Address/Data bit waveform for the HT12B Series of Encoders ...
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... The transmitted information is as shown: Pilot A0 & Sync. 1 Address/Data sequence The following provides a table of the address/data sequence for various models of the 2 ers. A correct device should be selected according to the requirements of individual address and data. HOLTEK Part No. HT12A HT12B HT12C HT12E/ ...
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Transmission enable For the HT12E/EA encoder, transmission is enabled by applying a low signal to the TE pin. But for the HT12A/B/C encoders transmission it is enabled by applying a low signal to one of the data pins D2~D11. Two ...
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Flowchart HT12A/B/C www.DataSheet4U.com Note: D2~D11 are transmission enables of the HT12A/B/ the transmission enable of the HT12E/EA Series of Encoders HT12E/EA 10 23rd Aug ’96 ...
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Oscillator frequency chart of the HT12E/EA www.DataSheet4U.com The recommended oscillator frequency Series of Encoders (decoder (HT12E/EA) OSCD OSCE 1 F (HT12A/B/C). OSCE 3 11 23rd Aug ’96 ...
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Package Information www.DataSheet4U.com 12 2 Series of Encoders 12 23rd Aug ’96 ...
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Address HT12E/EA – 14 DIP 8 Address www.DataSheet4U.com 4 Address/Data ...
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Application Circuits Application circuit 1 www.DataSheet4U.com Application circuit 3 Note: Typical infrared diode: EL-1L2 (KODENSHI CORP.) Typical RF transmitter: JR-220 (JUWA CORP.) FD-493TX (FISCHER-OLSEN, GERMANY Series of Encoders Application circuit 2 Application circuit 4 Transmitter Circuit VDD 1 ...