A150 LM393 Dual Differential Comparator IC, Low Power Low Offset Voltage, 8-Pin SOIC Surface Mount

The LM393 consists of two independent, high-precision voltage comparators designed to operate from a single power supply over a wide range of voltages. Its compact SOIC-8 surface-mount package makes it ideal for modern, space-constrained PCB designs. The device is famous for its ability to have an input common-mode voltage range that includes ground, even when operated from a single supply.

Key Technical Specifications

• Function: Dual Voltage Comparator

• Number of Channels: 2 Independent Comparators

• Supply Voltage Range: 2V to 36V (Single) or $\pm$1V to $\pm$18V (Split)

• Package Type: SOIC-8 (Small Outline IC) - Surface Mount (SMD)

• Low Supply Current: 0.4mA (typical) regardless of supply voltage

• Input Offset Voltage: 2.0mV (typical)

• Output Type: Open Collector (allows for level shifting and wired-OR connections)

Applications

• Limit Comparators: Triggering actions when a signal crosses a specific threshold.

• Zero-Crossing Detectors: Synchronizing circuits with AC power lines.

• Oscillators: Creating square waves for clock signals.

• Battery Monitors: Low-voltage or over-voltage protection circuits.

• Sensor Interfacing: Converting analog sensor outputs into digital high/low signals for microcontrollers.

Why Choose the LM393?

• High Versatility: Compatible with all forms of logic (TTL, DTL, ECL, MOS, and CMOS).

• Power Efficiency: Extremely low power consumption makes it perfect for battery-operated devices.

• Reliability: A industry-standard part with robust performance against supply voltage fluctuations.

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