LM339 IC Low-Power Low-Offset Voltage Quad Comparator SOIC-14

LM339 IC is a low-power, low-offset voltage quad comparator designed for applications requiring precision and power efficiency. It contains four independent voltage comparators that can operate from a single or dual power supply. The open-collector output configuration allows it to interface directly with TTL, CMOS, and other logic families. It is widely used in zero-cross detectors, voltage level detectors, and sensor interfaces.

Key Features of LM339 IC Low-Power Low-Offset Voltage Quad Comparator:

• Low Supply Current: Only 1.1 mA typical per comparator.
• Wide Supply Voltage Range: Operates from 2V to 36V (single supply) or ±1V to ±18V (dual supply).
• Low Input Offset Voltage: Typically 2mV for precision operation.
• Open-Collector Outputs: Allows wired-AND connections and easy interfacing with logic levels.
• Internally Compensated: No need for external frequency compensation.

Technical Specifications of LM339 IC:

• Number of Comparators: 4
• Input Offset Voltage: ±2mV typical, ±5mV max
• Input Common Mode Voltage Range: 0V to (V_CC – 2V)
• Supply Voltage Range: 2V to 36V (single) / ±1V to ±18V (dual)
• Output Type: Open-collector
• Response Time: 1.3µs for a 100mV input step
• Power Consumption: Low power, ideal for battery-powered applications

Mechanical Specifications of LM339 IC:

• Package Type: DIP-14 / SOIC-14 / TSSOP-14
• Pin Count: 14 pins
• Lead Pitch: 2.54mm (DIP)
• Mounting: Through-Hole (DIP) or Surface Mount (SOIC/TSSOP)

Dimensions:

• Length: 19.3mm (DIP)
• Width: 6.4mm
• Height: 4.5mm

Mounting Options:

• Through-Hole Mount: For DIP package on standard PCBs.
• Surface Mount: For compact designs using SOIC or TSSOP packages.

Schematic Diagram, Connection, Wiring and Pinout of LM339 IC:

• Refer Datasheet

Datasheet of LM339 IC:

• Download LM339 Datasheet (PDF)

Applications of LM339 IC:

• Zero-Cross Detectors: For phase-locked loop and AC signal sensing.
• Voltage Level Detection: Ideal for over-voltage and under-voltage monitoring.
• Oscillator Circuits: Used in function generators and waveform shaping circuits.
• Window Comparators: Detects if signal is within or outside a voltage range.
• Sensor Interface: Converts analog signals to digital logic for microcontrollers.

Equivalent of LM339 IC:

• LM239: Dual supply variant with similar characteristics
• LM2901: Low-power version suitable for automotive applications
• LM393: Dual comparator version of LM339

Package Includes:

• 1 x LM339 Low-Power Low-Offset Voltage Quad Comparator IC