LM339N/NOPB

Overview

The LM339N/NOPB is a quad analog comparator manufactured by Texas Instruments, housed in a 14-pin PDIP package. It operates on a single supply voltage ranging from 2 V to 36 V or dual supplies up to ±18 V. The device features four independent differential comparators with an open-collector output type. Key electrical parameters include a maximum input offset voltage of 5 mV, an input bias current of 250 nA, and a typical response time of 700 ns. Each channel can sink up to 6 mA of output current, while the total operating supply current is approximately 500 uA.

Feature Summary

• Integrates four independent high-gain differential comparators within a single integrated circuit package.
• Features open-collector outputs that facilitate direct interfacing with various logic families and bus systems.
• Designed for low power consumption with minimal operating supply current requirements.
• Capable of functioning across a wide range of single or split power supply voltages.

Applications

• Temperature monitoring and control circuits
• Level detection systems
• Supervisory timer circuits
• Peak hold circuits

Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free construction and RoHS compliance when sourcing. Confirm the package style matches the required through-hole mounting needs. Ensure the open-collector output configuration aligns with the pull-up resistor requirements of the target application logic. Cross-reference the datasheet revision to confirm parameter consistency.

Selection Notes

Select this component when multiple independent comparison functions are required in a space-constrained design. The open-collector output allows flexible voltage level shifting without additional components. Consider the 700 ns response time against application speed requirements. Verify that the 5 mV input offset voltage meets the precision needs of the sensing interface.

Part Context

This part belongs to the LM339 family of quad comparators, widely used in industrial and consumer electronics. The 'N' designation specifies the plastic DIP package, while 'NOPB' denotes non-lead-based packaging compliant with environmental standards. It serves as a general-purpose solution for analog signal conditioning and threshold detection tasks.

Replacement Considerations

• LM339AN/NOPB
• LM339DR

FAQ

What is the output configuration of the LM339N/NOPB?

The device utilizes an open-collector output configuration for all four channels, requiring an external pull-up resistor to the desired voltage level.

Can the LM339N/NOPB operate with dual power supplies?

Yes, it supports both single supply operation (2 V to 36 V) and dual supply operation (±1 V to ±18 V).