The LM393 is a versatile low‑power dual comparator IC designed for precision voltage comparison in analog and digital circuits. It features low offset voltage, wide supply voltage range, and open‑collector outputs, making it ideal for voltage monitoring, zero‑crossing detectors, oscillators, and sensor interfacing. Packaged in a standard DIP‑8 format, the LM393 is widely used in Arduino, embedded systems, instrumentation, and industrial electronics.

Specifications

• IC Type: Dual comparator

• Part Number: LM393

• Supply Voltage Range: 2V – 36V (single supply) or ±1V – ±18V (dual supply)

• Input Offset Voltage: Typically 2mV

• Output Type: Open‑collector (requires pull‑up resistor)

• Package: DIP‑8 (dual inline package)

• Operating Temperature Range: 0°C to +70°C (commercial)

• Applications: Voltage monitoring, oscillators, sensor interfacing, zero‑crossing detection, waveform shaping

Features

• Dual independent comparators in one IC

• Low offset voltage for precision applications

• Wide supply voltage range (single or dual supply)

• Open‑collector outputs for flexible interfacing

• Low power consumption CMOS design

• Compact DIP‑8 package for breadboard and PCB use

• Compatible with Arduino, ESP32, STM32, and other MCUs

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