LM339N-NG

Overview

The LM339N-NG is a low-power, low-offset voltage quad comparator manufactured by Texas Instruments. It features four independent differential input voltage comparators designed for single-supply operation within a voltage range of 2V to 36V (±1V to ±18V dual supply). The device utilizes an open-collector output configuration, allowing for flexible interfacing with various logic families. Key electrical specifications include a maximum input offset voltage of 2mV at 30V and a typical response time of 1.3µs. It operates within a commercial temperature range of 0°C to 70°C and is housed in a standard 14-pin PDIP package.

Feature Summary

• Quad differential input architecture providing four independent comparison channels
• Open-collector output stage enabling wired-AND connections and level shifting
• Low power consumption suitable for battery-operated applications
• Wide single-supply voltage capability from 2V to 36V

Applications

• Overvoltage and undervoltage detection circuits
• Temperature sensing and control systems
• Peak voltage detection modules
• Logic level translation between different voltage domains

Procurement Notes

Verify the specific suffix 'NG' against official Texas Instruments documentation to confirm it denotes a valid manufacturing variant or packaging designation distinct from the standard LM339N. Ensure the component matches the required 14-pin PDIP form factor and commercial temperature grade. Cross-reference the supplier's datasheet with the manufacturer's official specification sheet to validate pinout compatibility and electrical limits before integration.

Selection Notes

Select this component when multiple independent voltage comparisons are required within a single integrated circuit. It is appropriate for designs needing open-collector outputs to interface with external pull-up resistors or different logic voltages. Consider its low offset voltage for precision threshold detection applications where standard comparators may introduce significant error margins.

Part Context

This part belongs to the LMx39/LM2901 family of quad comparators from Texas Instruments. These devices are engineered for general-purpose analog switching tasks where low power and high accuracy are prioritized over ultra-high speed. The LM339 series is widely used as a cost-effective alternative to operational amplifiers configured as comparators, offering dedicated optimization for fast switching and saturation recovery.

Replacement Considerations

Direct replacements include the LM339N/NOPB and LM339N, which share identical pinouts and electrical characteristics. Other compatible variants within the same family, such as the LM239N or LM139N, may be considered if industrial or military temperature ranges are not required.