LM339MX

Overview

The LM339MX is a quad analog comparator manufactured by Texas Instruments, housed in a 14-pin SOIC surface-mount package. It operates on a single supply voltage ranging from 2V to 36V or dual supplies of ±1V to ±18V. The device features four independent differential comparators with open-collector outputs capable of sinking up to 16mA at 5V. Key electrical characteristics include a maximum input offset voltage of 5mV and an input bias current of 250nA. The typical response time is 1.3µs, and the operating supply current is approximately 2mA. The component functions within a temperature range of 0°C to 70°C.

Feature Summary

• Integrates four independent high-gain differential comparators for multi-channel signal processing
• Features open-collector outputs compatible with various logic families and pull-up voltages
• Operates efficiently with low power consumption suitable for battery-powered applications
• Supports wide single or split power supply ranges for flexible system integration

Applications

• Over-voltage and under-voltage detection circuits
• Analog-to-digital conversion interfaces
• Temperature sensing threshold monitoring
• Waveform generation and shaping

Procurement Notes

Verify the specific ordering suffix and manufacturing date code upon procurement. Confirm RoHS compliance status as indicated in the official datasheet. Ensure the package type matches the design requirements. Check for any recent product change notices regarding pinout or electrical specifications before finalizing the bill of materials.

Selection Notes

Select this component when multiple independent comparison channels are required in a compact surface-mount footprint. Consider the open-collector output structure for level shifting needs. Evaluate the 1.3µs propagation delay against system speed requirements. Verify that the 16mA sink capability meets the load requirements without external buffering.

Part Context

This part belongs to the LM339 family of low-power quad comparators. It serves as a standard general-purpose solution for linear and switching applications. The device is widely used in industrial control and consumer electronics where cost-effective multi-channel comparison is necessary. It complements other members of the series such as the LM139 and LM239.

Replacement Considerations

• LM339MX/NOPB