LM311 – Single High-Speed Voltage Comparator (DIP8 / SOP8) ±1.5V – ±15V | Fast Response | TTL/CMOS Compatible | 0°C to +70°C

The LM311 is a single high-speed voltage comparator designed for precision voltage comparison and fast switching applications. It offers an open-collector output capable of driving loads connected to different voltage levels, making it highly versatile in analog and digital interfacing circuits.

With a wide operating voltage range of ±1.5V to ±15V, the LM311 supports both single and dual supply operation. It features low input offset voltage (<±7.5mV), low input bias current (<250nA), and a typical supply current of 2.4mA, ensuring stable and reliable performance over the full operating temperature range.

The LM311 is available in DIP8 and SOP8 packages, suitable for both through-hole and surface-mount designs.

Key Features:

• Function: Single High-Speed Voltage Comparator

• Technology: Bipolar

• Operating Voltage: ±1.5V – ±15V (single or dual supply)

• Quiescent Current: 2.4mA (typical)

• Input Offset Voltage: < ±7.5mV

• Input Bias Current: < 250nA

• Operating Temperature: 0°C to +70°C

• Package Types: DIP8 (Through-Hole) / SOP8 (Surface Mount)

• Open-Collector Output for Flexible Voltage Interface

• High-Speed Response

• Wide Common-Mode Input Range

• Compatible with TTL and CMOS Logic Levels

Applications:

• Voltage Level Detection and Window Comparators

• Pulse, Square-Wave, and Zero-Crossing Detection

• Oscillators and Timing Circuits

• Analog-to-Digital Converter Front Ends

• Logic Level Shifting and Signal Conditioning