The HT12D is a decoder integrated circuit belonging to the 212 series. These decoders are mainly used in remote control systems for burglar alarms, car door controllers, and security systems. Designed to interface with RF and infrared circuits, the HT12D is compatible with 212 series encoders, matching address numbers and data formats. It converts serial inputs from an encoder, like an RF transmitter, into parallel outputs. The device checks the serial input data against the local addresses three times and decodes the data code if they match without errors. Upon a successful match, a high signal is sent to the VT pin to indicate a valid transmission. The HT12D decodes 12 bits of information, which includes 8 address bits and 4 data bits. The data on the 4-bit latch-type output pins remains until it is updated with new data.
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
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 Holteks212 series of encoders.
18-pin DIP
Applications
Burglar alarm system
Smoke and fire alarm system.
Garage door controllers
Car door controllers
Car alarm system
Security system
Cordless telephones
Other remote-control systems
Package Includes
1 x HT12D Decoder IC
* Product Images are shown for illustrative purposes only and may differ from actual product.
The HT12D Decoder IC is a versatile encoder ics used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
Integrating into a custom electronics project
Learning and experimenting with circuits
Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
Free shipping on orders above ₹999 across India
Dispatched within 1-3 business days
Expected delivery: 3-7 business days depending on location
Secure packaging to ensure safe transit of electronic components
Weight
0.0 kg
15 Days Warranty
Please note that this item is only covered by a standard supplier warranty against manufacturing defects for a period of 15days from the time of delivery. It is important to understand that only manufacturing defects are covered under this warranty, and any other issues will not be considered for reimbursement or replacement. We strongly advise inspecting the product upon delivery to ensure it meets your expectations. In case of any manufacturing defects, we guarantee reimbursement or replacement.
What voids warranty:
If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.
Lokesh Pandey (verified owner) –
Good HT12D Decoder IC. Works as described. Calibration needed some patience but results are good.
Abhishek Hegde (verified owner) –
Great HT12D Decoder IC. Using it in my smart agriculture system. Reliable measurements every time.
Ankit Dhawan (verified owner) –
Perfect HT12D Decoder IC for my automation project. Integrates seamlessly with my microcontroller.
Pooja Dave (verified owner) –
Pretty good HT12D Decoder IC. Documentation could be better but the sensor itself is solid.
Rashmi Menon (verified owner) –
Nice HT12D Decoder IC. Readings are mostly accurate. Good enough for my hobby project.
Isha Vohra (verified owner) –
Okay HT12D Decoder IC. Had to add a capacitor to stabilize readings. Works now.
Sunil Chauhan (verified owner) –
Nice HT12D Decoder IC. Readings are mostly accurate. Good enough for my hobby project.
Sakshi Saini (verified owner) –
This HT12D Decoder IC is excellent for the price. My data logging project is working perfectly now.
Anirudh Patel (verified owner) –
Very satisfied with this HT12D Decoder IC. Library support is good and it’s easy to interface.
Anil Naidu (verified owner) –
Great quality HT12D Decoder IC. Calibrated it easily and the accuracy is impressive.
Urmi Trivedi –
Excellent HT12D Decoder IC! Readings are accurate and consistent. Perfect for my project.
Advik Kumar –
Great HT12D Decoder IC. Using it in my smart agriculture system. Reliable measurements every time.
Sahil Saini (verified owner) –
Bought this HT12D Decoder IC for my college project. Accurate readings, easy to code. Very happy!
Ashwin Joshi (verified owner) –
Great quality HT12D Decoder IC. Calibrated it easily and the accuracy is impressive.
Rahul Bajaj (verified owner) –
Nice HT12D Decoder IC. Readings are mostly accurate. Good enough for my hobby project.
Deepika Khurana –
Outstanding accuracy from this HT12D Decoder IC. Compared with a professional instrument, readings match closely.