4049 Buffer IC

The 4049 Buffer IC (CD4049) is a hex inverter buffer based on CMOS technology. It contains six independent NOT gates (inverters) designed to invert digital signals while providing improved drive capability and signal stability. The IC can operate over a wide voltage range (3V–15V), making it suitable for both low-power and general-purpose digital applications.

Commonly used with Arduino, ESP32, ESP8266, and other microcontrollers, the 4049 is ideal for signal conditioning, logic level shifting, waveform shaping, and oscillator circuits.

🔹 Key Features

1. Six independent inverter (NOT gate) buffers
2. Wide operating voltage range: 3V to 15V
3. High noise immunity (CMOS technology)
4. Low power consumption
5. Good output drive capability
6. Suitable for level shifting (e.g., 5V ↔ 12V logic)
7. Available in DIP and SMD packages

🔹 Applications

1. Logic signal inversion
2. Logic level shifting
3. Waveform shaping and signal buffering
4. Oscillator circuits
5. LED drivers (low current)
6. Microcontroller interfacing
7. General-purpose digital electronics projects