LM339DG

Overview

The LM339DG is a quad single-supply comparator manufactured by onsemi in a 14-pin SOIC package. It operates from a single supply of 3.0 V to 36 V or split supplies of ±1.5 V to ±18 V. Key electrical characteristics include a typical input bias current of 25 nA, an input offset voltage of ±2.0 mV (typical), and a large signal response time of 1.3 μs. The device features open-collector outputs compatible with TTL and CMOS logic, with a typical output saturation voltage of 130 mV at 4.0 mA sink current.

Feature Summary

• Single or split power supply operation across wide voltage ranges
• Low input bias and offset currents for high-precision sensing
• Open-collector outputs compatible with various logic families
• Input common mode voltage range extends to ground

Applications

• Level detection circuits
• Low-level sensing applications
• Memory applications

Procurement Notes

Verify the specific suffix 'DG' corresponds to the SOIC-14 package and lead-free status as defined in the ordering information table. Confirm that the device marking matches the assembly location, wafer lot, and year-week codes specified in the marking diagram section. Ensure compliance with RoHS and Pb-Free requirements if applicable to the target market regulations.

Selection Notes

Select this component when a quad comparator configuration is required within a compact surface-mount footprint. The wide input common mode range including ground makes it suitable for single-supply designs where signals approach zero volts. Consider the 1.3 μs response time and 25 nA bias current for applications requiring moderate speed and low power consumption without the need for rail-to-rail output swing.

Part Context

This part belongs to the LM339 family of single-supply quad comparators. It shares functional similarities with the LM239, LM2901, and MC3302, which differ primarily in temperature ranges and automotive qualification. The LM339DG specifically denotes the commercial grade version housed in a standard SOIC-14 package, distinct from the NCV prefix automotive variants or other package options like PDIP or TSSOP.

Replacement Considerations

LM239DG

FAQ

What is the maximum differential input voltage allowed?

The maximum differential input voltage range is 36 Vdc for the LM339.

Can the inputs handle voltages below ground?

Yes, the input common mode voltage range includes ground (0 V) and can go slightly negative, but voltages more negative than -0.3 V should be avoided to prevent damage.