LM239NG

Overview

The LM239NG is a quad single-supply comparator manufactured by onsemi in a PDIP-14 package. It operates from a single supply voltage of 3.0 V to 36 V or split supplies of ±1.5 V to ±18 V. The device features low input bias current (25 nA typical), low input offset voltage (±5.0 mV maximum at +25°C, ±9.0 mV over temperature range), and an input common-mode voltage range that includes ground. Outputs are TTL and CMOS compatible with open-collector configuration.

Feature Summary

• Single and split supply operation capability
• Input common-mode voltage range includes ground
• Low input bias and offset currents
• TTL and CMOS compatible outputs

Applications

• Level detection circuits
• Low-level sensing applications
• Memory applications
• Consumer electronic systems
• Automotive electronic systems
• Industrial electronic systems

Procurement Notes

Verify the component matches the specific LM239 variant within the LM339/LM239/LM2901 family. Confirm the PDIP-14 package type and ensure compliance with RoHS standards as indicated by the manufacturer's documentation. Check for any specific automotive qualification requirements if applicable to your design.

Selection Notes

Select this component when a quad comparator with wide single-supply voltage range is required. Consider its low power consumption and ability to operate with input signals down to ground potential. Ensure the application does not require push-pull outputs, as this device utilizes open-collector outputs requiring external pull-up resistors.

Part Context

The LM239 belongs to the LMx39 series of single-supply quad comparators. This family is designed for general-purpose voltage comparison tasks where low power consumption and compatibility with various logic families are essential. It serves as a robust solution for analog-to-digital conversion interfaces and signal conditioning in mixed-signal environments.

Replacement Considerations

LM339N, LM2901N, MC3302P are functionally similar devices within the same family. Verify pinout compatibility and electrical specifications such as offset voltage and supply voltage ranges before substitution. Ensure the replacement part meets the specific temperature and performance requirements of the original design.