Universal IR Receiver — TL1838 / VS1838B (38 kHz)

The TL1838 / VS1838B is a compact, high-sensitivity infrared (IR) receiver designed for 38 kHz carrier signals (38Khz). It provides robust performance with up to 18 m detection range and excellent immunity to ambient light and electromagnetic interference. Supporting common remote control protocols such as NEC and RC5, this device is ideal for Arduino, Raspberry Pi, and other microcontroller projects, as well as consumer electronics and DIY electronics modules.

✅ Key Features

• 38 kHz demodulated IR receiver optimized for remote control signals
• Long-range reception up to 18 meters
• High sensitivity and speed with a built-in high-gain amplifier
• Reduced susceptibility to ambient light and EMI for reliable operation
• Direct TTL/CMOS logic compatibility for easy interfacing
• Wide supply voltage range: DC 2.7 V to 5.5 V
• Compact 3‑pin package with 2.54 mm pitch for breadboards and PCBs
• Works seamlessly with Arduino, Raspberry Pi, ESP32/ESP8266, STM32, AVR, and PIC

⚙️ Technical Specifications

• Working Voltage: DC 2.7 V to 5.5 V
• IR Carrier Frequency: 38 kHz (1838, NEC code)
• Compatible Communication Standards: NEC code, RC5 code
• Reception Angle: 45° (typ.)
• Internal Amplifier Circuit: High gain
• Speed: High
• Sensitivity: High
• Light Interference: Less affected by ambient light
• Interference Susceptibility: Low (built-in protection)
• Construction: Metal sheath for electric field protection
• Logic Compatibility: TTL and CMOS
• Universal Receiver: 38 kHz
• Peak Wavelength: 940 nm
• Detection Distance: Up to 18 meters
• Pin Pitch: 2.54 mm
• Pin Length: 20 mm
• Dimensions: 5 mm × 7.5 mm × 6.7 mm
• Weight: 0.5 g

🔌 Compatibility & Integration

Ideal for Arduino, Raspberry Pi, and other microcontroller platforms. Connect VCC (2.7–5.5 V), GND, and the digital output to a GPIO pin for decoding NEC/RC5 protocols. For 3.3 V-only systems (e.g., Raspberry Pi), power the receiver at 3.3 V for direct GPIO compatibility, or use level shifting if powered at 5 V.

🧩 Typical Applications

• Remote control decoding with Arduino and Raspberry Pi
• Consumer electronics: TVs, set-top boxes, satellite receivers, CD players
• Appliances and HVAC: air conditioners and IR-enabled devices
• Robotics and DIY electronics components and modules
• Remote-controlled toys and smart home IR interfaces

📦 Package Contents

1 × TL1838 / VS1838B 38 kHz Infrared Receiver