HT12D chip

The HT12D is a decoder IC from Holtek Semiconductor designed for remote control applications. It is widely used in wireless communication systems to decode data encoded by the HT12E encoder IC. The HT12D chip is ideal for use in consumer electronics, home automation systems, and security systems, providing a reliable means of wireless data reception and decoding.

Key Features:

• Data Decoding: Decodes 12-bit address and 4-bit data for secure data reception
• Low Power Consumption: Ideal for battery-operated devices
• Wide Operating Voltage: Operates from 2.4V to 12V
• Easy Integration: Compatible with HT12E encoder IC
• On-Chip Oscillator: Requires minimal external components
• Status Indicator: Valid transmission indicator pin (VT)

Technical Specifications:

• Operating Voltage: 2.4V to 12V
• Address Bits: 12
• Data Bits: 4
• Oscillator Frequency: Adjustable via external resistor (typically 3kHz to 1MHz)
• Standby Current: Less than 1µA at 5V
• Package Type: DIP-18 and SOP-18
• Operating Temperature Range: -20°C to +70°C

Applications:

• Remote control systems
• Home automation
• Wireless security systems
• Garage door openers
• Consumer electronics
• Toy controllers

Usage:

1. Configure the 12 address pins to match the address of the corresponding HT12E encoder.
2. Connect the 4 data output pins to the desired control circuits or indicators.
3. Connect an appropriate resistor to the oscillator pin to set the desired frequency.
4. Connect the VT pin to an LED or other indicator to show valid data reception.
5. Apply power to the chip and it will begin decoding data transmitted by the HT12E.

Caution:

• Ensure correct power supply voltage to avoid damaging the chip.
• Match the address pins on the HT12D and HT12E to ensure proper communication.
• Protect the chip from electrostatic discharge (ESD) during handling.

Datasheet:
For detailed technical specifications, refer to the HT12D Datasheet.