LM339ADG4

Overview

The LM339ADG4 is a quad differential 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 30V or dual supplies of ±1V to ±15V. The device features an open-collector output configuration compatible with CMOS, DTL, ECL, MOS, and TTL logic families. Key electrical specifications include a maximum input offset voltage of 5mV, an input bias current of 250nA, and a typical response time of 1.3µs. It draws a supply current of approximately 500µA and supports an output sink current of up to 6mA per channel.

Feature Summary

• Integrates four independent differential comparators within a single integrated circuit for space-efficient designs.
• Features an open-collector output stage that allows flexible interfacing with various digital logic families.
• Operates effectively across a wide range of single or split power supply voltages.
• Designed for low-power applications with minimal quiescent current consumption.

Applications

• Battery-powered systems requiring efficient voltage monitoring
• Over-voltage and under-voltage protection circuits
• Digital multimeters and measurement instrumentation
• Temperature control systems using sensor threshold detection

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free manufacturing status as defined by Texas Instruments documentation. Confirm the package type matches the required PCB footprint for the 14-pin SOIC variant. Ensure the operating temperature range aligns with the commercial grade specifications provided in the official datasheet before finalizing procurement orders.

Selection Notes

Select this component when a quad comparator solution is needed with open-collector outputs for direct logic interfacing. It is suitable for designs prioritizing low static power consumption over high-speed switching performance. Consider alternative packages if higher pin counts or different thermal characteristics are required for the specific application environment.

Part Context

This part belongs to the LM339 family of quad voltage comparators, a long-standing standard in analog signal processing. The LM339 series is widely used in industrial and consumer electronics for basic voltage comparison tasks. The LM339ADG4 represents the commercial-grade version of this family, offering a balance of performance and cost-effectiveness for general-purpose electronic designs.

Replacement Considerations

LM339DRG4: Pin-compatible alternative with identical electrical characteristics in a SOIC-14 package.

FAQ

What is the output configuration of the LM339ADG4?

The LM339ADG4 utilizes an open-collector output configuration, which requires an external pull-up resistor to function correctly with most logic families.

Does the LM339ADG4 support dual power supplies?

Yes, the device can operate with dual supplies ranging from ±1V to ±15V, in addition to single supply operation from 2V to 30V.