LM339DRG3

Overview

The LM339DRG3 is a quad differential voltage comparator manufactured by Texas Instruments, designed for operation from a single power supply. It features four independent comparators with open-collector outputs in a 14-pin SOIC package. The device operates within a supply voltage range of 2 V to 30 V and draws a typical supply current of 500 µA. Key electrical specifications include a maximum input offset voltage of 5 mV, an input bias current of 250 nA, and a response time of 1.3 µs. It supports an output sink current of 6 mA per channel and functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Quad differential architecture providing four independent comparison channels
• Open-collector output configuration compatible with CMOS and TTL logic families
• Single-supply operation capability including ground-referenced common-mode input voltages

Applications

• General-purpose voltage monitoring circuits
• Threshold detection systems
• Logic level shifting interfaces

Procurement Notes

Verify the specific suffix G3 indicates RoHS compliance and lead-free construction as per manufacturer standards. Confirm the SOIC-14 package dimensions match the target PCB footprint requirements. Ensure the commercial temperature grade (0°C to +70°C) aligns with the operational environment constraints. Cross-reference the datasheet revision history for any recent parameter updates or pinout changes before finalizing the design.

Selection Notes

Select this component when multiple independent comparisons are required from a single integrated circuit. The open-collector output allows flexible interfacing with various logic families without additional pull-up components if voltage levels differ. Consider the 1.3 µs propagation delay for timing-sensitive applications. The low supply current makes it suitable for battery-powered designs where power efficiency is critical compared to higher-speed alternatives.

Part Context

This part belongs to the LMx39 series of analog comparators, which includes variants like LM139, LM239, and LM339. These devices share a common functional architecture but differ in temperature ranges and performance grades. The LM339 represents the commercial grade version, offering a balance of cost and performance for standard industrial and consumer electronics applications requiring reliable voltage comparison.

Replacement Considerations

LM339DR: Identical functional equivalent without the RoHS-specific suffix designation.