LM339DRE4

Overview

The LM339DRE4 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 2 V to 30 V or dual supplies of ±1 V to ±15 V. The device features an open-collector output capable of sinking up to 6 mA per channel. Key electrical specifications include a typical response time of 1.3 µs, a maximum input offset voltage of 5 mV, and a quiescent current of approximately 500 µA. It functions within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates four independent differential comparators within a single compact integrated circuit.
• Features open-collector outputs that facilitate direct interfacing with various logic families and bus systems.
• Supports operation across a wide common-mode voltage range extending to the positive supply rail.

Applications

• Temperature monitoring and control circuits
• Voltage level detection systems
• Simple analog-to-digital conversion interfaces

Procurement Notes

Verify the specific suffix 'E4' indicates lead-free composition and RoHS compliance status as defined by Texas Instruments documentation. Confirm the package variant matches the required SOIC-14 footprint for PCB layout compatibility. Ensure the component meets the intended operating temperature range requirements for the final application environment.

Selection Notes

Select this component when a low-cost, general-purpose quad comparator is required for basic threshold detection tasks. It is suitable for applications where high-speed switching is not critical, given its microsecond-level response time. Consider the open-collector output structure when designing pull-up resistor networks for the desired logic levels.

Part Context

This part belongs to the LM339 family of analog comparators, a widely used series for general-purpose signal processing. The 'DRE4' designation specifies the SOIC-14 tape-and-reel packaging format with lead-free termination. It serves as a standard solution for cost-sensitive designs requiring multiple comparison functions without the complexity of operational amplifiers.

Replacement Considerations

LM339DR: Pin-compatible alternative with identical electrical characteristics but potentially different packaging or manufacturing lot details.

FAQ

What is the maximum output current capability per channel?

Each output channel can sink a maximum current of 6 mA.

Does the device support dual power supplies?

Yes, it can operate with dual supplies ranging from ±1 V to ±15 V.