TTP223 Capacitive Touch Switch Digital Sensor Module (Red Board)

TTP223 Capacitive Touch Switch Digital Sensor Module (Red Board) is a solid-state capacitive touch detection switch centered around the Tontek TTP223 touch sensor IC. Offering a modern, wear-free alternative to traditional mechanical push buttons, this module detects human skin proximity through non-metallic surfaces such as glass, acrylic, plastic, and wood, outputting a clean active-high or active-low digital logic signal to microcontrollers.

Key Features:

• Solid-State Touch Sensing: Eliminates mechanical switch wear, contact bounce, and tactile degradation.
• Penetrates Non-Metallic Materials: Detects fingertip touch through glass, plastic, and acrylic panels up to 3mm thick.
• Configurable Output Modes: Solder jumpers A and B permit selection of Active-High/Low and Toggle/Momentary modes.
• Ultra-Low Power Consumption: Consumes only 1.5 µA in low power mode, making it ideal for battery-operated devices.
• Onboard Status LED: Red SMD indicator LED provides instant visual confirmation when touch is registered.
• Direct Microcontroller Interface: Single digital output line connects directly to 3.3V and 5.0V microcontroller GPIOs.

Technical Specifications:

• Operating Voltage: 2.0V to 5.5V DC
• Touch Controller IC: Tontek TTP223-BA6 Capacitive Touch IC
• Response Time: 60 ms in fast mode; 220 ms in low power mode
• Output Modes: Momentary or Latching Toggle (selectable via onboard pads A and B)
• Output Logic Level: CMOS digital output (matches VCC)
• Quiescent Current: ~1.5 µA at 3V input
• Operating Temperature: -20°C to +70°C

Mechanical Specifications:

• PCB Structure: Double-sided through-hole red solder-mask FR-4 PCB
• Touch Pad Area: 11 × 10 mm isolated copper capacitive pad
• Pin Pitch: 2.54 mm (0.1 inch) standard header holes
• Weight: Approximately 2 grams

Dimensions:

• Length: 15.0 mm
• Width: 11.0 mm
• Height: 2.5 mm

Pinout and Wiring:

• VCC: 2.0V to 5.5V DC Power Supply Input
• GND: Ground (0V)
• SIG (I/O): Digital Touch Output (connects to MCU GPIO)

Datasheet Reference:

• Datasheet Reference: Consult Tontek TTP223 1-Key Touch Pad Detector IC Datasheet for pad strapping configurations.

Commonly Used in:

• Concealed wall touch switches and waterproof interactive displays
• Smart home capacitive lighting and appliance control panels
• Interactive museum exhibits and kiosk touch triggers
• Robotic bumper and proximity detection touch surfaces

Applications:

• Touch-activated power switches replacing mechanical pushbuttons
• Behind-glass sealed keypads for cleanrooms and outdoor housings
• Touch dimmer triggers for LED desk lamps
• Interactive Arduino, ESP32, and Raspberry Pi capacitive interfaces

Equivalent Models:

• TTP223B Blue Mini Touch Sensor Module
• TTP224 4-Channel Touch Module
• AT42QT1010 Capacitive Touch Breakout

Package Includes:

• 1 × TTP223 Capacitive Touch Switch Digital Sensor Module (Red Board)