LM393 Dual Differential Comparator

The LM393 Dual Differential Comparator is a low-power, high-precision IC that contains two independent voltage comparators in a single package. Designed to operate from a wide supply voltage range, it features open-collector outputs, making it ideal for level detection, zero-crossing detectors, window comparators, and general analog signal comparison in both industrial and consumer electronics.

Key Features

• Dual Independent Comparators
  Two comparators integrated in one IC for flexible circuit design.

• Wide Supply Voltage Range
  Operates from single or dual power supplies.

• Low Power Consumption
  Suitable for battery-powered and low-power applications.

• Open-Collector Output
  Allows easy interfacing with TTL, CMOS, relays, and LEDs.

• High Input Impedance
  Minimizes loading on signal sources.

• Fast Response Time
  Ideal for signal monitoring and control circuits.

Specifications

• IC Type: Dual Differential Comparator

• Model: LM393

• Number of Comparators: 2

• Supply Voltage:

  • Single Supply: 2V to 36V

  • Dual Supply: ±1V to ±18V

• Input Offset Voltage: Typical 2 mV

• Input Bias Current: Typical 25 nA

• Output Type: Open Collector

• Propagation Delay Time: ~1.3 µs

• Operating Temperature Range: −40°C to +85°C

• Package Types: DIP-8 / SOIC-8 (varies by version)

• Application: Voltage comparison, zero-cross detection, window comparator, over/under-voltage protection, signal conditioning