LM339ANG4

Overview

The LM339ANG4 is a quad differential voltage comparator manufactured by Texas Instruments, housed in a 14-pin PDIP package. It operates on a single supply voltage ranging from 2 V to 36 V or split supplies of ±1 V to ±18 V. The device features four independent comparators with open-collector outputs capable of sinking up to 6 mA. Key electrical specifications include a maximum input offset voltage of 5 mV, an input bias current of 250 nA, and a typical response time of 1.3 µs. It functions within a temperature range of 0°C to +70°C.

Feature Summary

• Quad differential voltage comparison architecture
• Wide single or dual power supply operation capability
• Open-collector output configuration for logic compatibility
• Input common-mode voltage range includes ground

Applications

• Precision voltage monitoring circuits
• Analog-to-digital conversion interfaces
• Over-voltage and under-voltage protection systems
• Temperature sensing threshold detection

Procurement Notes

Verify the specific suffix 'G4' against the manufacturer's official datasheet to confirm compliance with lead-free and RoHS directives. Ensure the ordering part number matches the exact package style and temperature grade required for the target application environment. Cross-reference the component marking with the official identification guide to prevent counterfeit substitution.

Selection Notes

Select this component when multiple independent voltage comparisons are required from a single integrated circuit. The open-collector output allows for wired-AND connections and easy interfacing with various logic families. Consider the 1.3 µs propagation delay for timing-sensitive applications and ensure the load can accommodate the open-drain sink current requirements.

Part Context

This device belongs to the LMx39 family of low-power quad comparators, which includes variants such as the LM139, LM239, and LM2901. These components share similar functional characteristics but may differ in offset voltage precision, temperature ranges, and manufacturing revisions. The LM339 series is widely used in industrial and consumer electronics for signal conditioning and threshold detection tasks.

Replacement Considerations

• LM339AN/NOPB
• LM339DRG4
• LM339PWRE4