HT12D

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HT12D

  • 제조업체Holtek Semicon
  • Mfr.부분 #HT12D
  • 패키지
  • 데이터시트
  • 재고 있음7665

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사양

Manufacturer Holtek Semicon
Package DIP-18

개요

Description

HT12D is an integrated circuit (IC) used primarily for remote control applications. It operates as a decoder for 12-bit address and data, facilitating communication between a microcontroller and peripheral devices. Typically paired with HT12E, the HT12D decodes signals received from HT12E, translating them into parallel output data.
The IC features 12 address pins, allowing for up to 4096 unique address combinations, which helps avoid interference from other devices. It supports 8 data output pins, enabling the transmission of 8 bits of data. HT12D operates in a range of 2.4V to 12V, making it versatile for various applications.
Furthermore, it includes control pins for enabling and disabling the decoder, along with additional features like a data pin for serial data input. Its simplicity and effectiveness make HT12D a popular choice for remote controls, RF communication, and various embedded system applications.

Features

The HT12D is a versatile decoder IC commonly used in remote control applications. Key features include:
1. Address Decoding: It supports 12-bit address decoding, allowing for a unique identification of devices in a system, preventing interference from other devices.
2. Data Handling: It can decode up to 8 data inputs, enabling the transmission of multiple signals.
3. Serial Output: The IC provides a serial output that can be interfaced with microcontrollers for further processing.
4. Active Low Outputs: The outputs are active low, which means they are triggered when the output goes low, making it compatible with various control circuits.
5. Wide Voltage Range: It operates within a voltage range of 2.4V to 12V, providing flexibility in power supply options.
6. Low Power Consumption: The HT12D is designed for low power operation, making it suitable for battery-powered applications.
7. Integrated Oscillator: It includes an internal oscillator, simplifying the design requirements for generating clock signals.
These features make the HT12D ideal for remote control systems and wireless communication applications.

Package

The HT12D is typically available in a 16-pin DIP (Dual In-line Package) format. It may also be found in other package types like SOIC (Small Outline Integrated Circuit) depending on the manufacturer. The DIP package is commonly used in prototyping and hobbyist applications.

Pinout

The HT12D is a 18-pin integrated circuit used for interfacing data between a microcontroller and RF modules or infrared devices in remote control applications.
Pin Count: 18 pins.
Function of Pins:
1. Address Pins (A0-A7, 8 pins): Used to set the address for communication, enabling multiple HT12D devices to operate on the same bus without interference.
2. Data Pins (AD8-AD15, 8 pins): For data input, these pins accept the data to be transmitted.
3. VCC (Pin 9): Supply voltage input (typically 5V).
4. GND (Pin 10): Ground reference.
5. TE (Pin 11): Transmit Enable; activates the transmission when high.
6. A0 (Pin 12): Address pin for chip selection.
7. D0-D7 (Pins 13-20): Data output pins that send data to the RF module.
In summary, the HT12D facilitates wireless data transmission by encoding data based on the configured address and sends it via RF or IR.

Manufacturer

The HT12D is manufactured by Holtek Semiconductor Inc., a Taiwanese company. Holtek specializes in the design and production of microcontrollers, and other integrated circuits, focusing on applications in consumer electronics, automotive, and industrial sectors. Established in 1993, the company provides a wide range of products, including encoding and decoding solutions, which are commonly used in remote control systems, RF communication, and sensor applications. Holtek is known for its innovation in low-power and cost-effective semiconductor solutions.

Application

HT12D is an 18-pin integrated circuit commonly used in remote control applications, such as wireless data transmission systems, toy control, and home automation. It interfaces with HT12E for encoder-decoder pairing, enabling communication between microcontrollers and peripheral devices. Its applications include remote keyless entry systems, security alarms, and various wireless sensor networks.

Equivalent

Equivalent products to the HT12D chip include the RC-5, PT2262, and Aurel RX-4. These chips serve similar functions in RF remote control applications, allowing for addressable data transmission and reception. Other alternatives may include the MX25R and NRF24L01 for more advanced wireless communication. Always check specifications for compatibility.

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