LP339M/NOPB

Overview

The LP339M/NOPB is a quad low-power general-purpose differential comparator manufactured by Texas Instruments. It features four independent comparators within a single 14-pin SOIC package. The device operates on a single supply voltage ranging from 2V to 36V or dual supplies of ±1V to ±18V. Key electrical specifications include a maximum input offset voltage of 5mV, an input bias current of 250nA, and a typical response time of 1.3µs. The output stage provides an open-collector configuration capable of sinking up to 16mA at 5V. It functions within a commercial temperature range of 0°C to 70°C.

Feature Summary

• Integrates four independent high-speed differential comparators in a compact surface-mount package
• Features low power consumption with minimal operating supply current requirements
• Provides open-collector outputs compatible with various logic families and pull-up voltages
• Operates reliably across a wide single or split power supply voltage range

Applications

• Battery-powered equipment requiring low quiescent current
• On-off threshold detection circuits
• Simple analog-to-digital conversion interfaces
• Temperature sensing and control systems

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance as per Texas Instruments standards. Confirm the package type matches the required PCB footprint for the 14-SOIC narrow variant. Ensure the operating environment stays within the specified commercial temperature limits. Check for any recent product lifecycle notices regarding availability or obsolescence status before finalizing procurement plans.

Selection Notes

Select this component when multiple independent comparison channels are needed in a space-constrained design. It is suitable for applications prioritizing low power draw over ultra-high speed performance. Consider the open-collector output requirement for proper circuit interfacing. Evaluate if the 5mV offset voltage specification meets the precision requirements of the target application compared to higher-precision alternatives.

Part Context

This part belongs to the LM339/LP339 family of quad comparators. The LP339 variant specifically denotes the low-power version of the standard LM339. The NOPB suffix signifies that the device is manufactured without lead and complies with RoHS directives. It serves as a direct pin-compatible replacement for legacy National Semiconductor LP339 parts.

Replacement Considerations

The LM339M/NOPB is a functional equivalent with potentially different power characteristics. The LM339D/NOPB offers the same functionality in a similar SOIC package. Verify thermal dissipation capabilities when substituting, as power ratings may vary slightly between the LM and LP series variants.