LM393LVDR

Overview

The LM393LVDR is a dual low-voltage analog comparator manufactured by Texas Instruments, housed in an SOIC-8 surface-mount package. It operates within a supply voltage range of 1.65 V to 5.5 V with a typical quiescent current of 25 uA per channel. The device features rail-to-rail inputs and open-drain outputs capable of sourcing 4 mA. Key electrical specifications include a maximum input offset voltage of 2 mV, propagation delay of 600 ns, and operation across a temperature range from -40°C to +125°C.

Feature Summary

• Low-voltage operation optimized for single-supply systems down to 1.65 V
• Rail-to-rail input capability allows sensing near ground potential
• Open-drain output structure enables direct interface with various logic families

Applications

• Battery-powered monitoring circuits requiring minimal power consumption
• Threshold detection in low-voltage embedded systems
• Signal conditioning for sensors operating at reduced supply voltages

Procurement Notes

Verify the specific suffix 'DR' confirms the SOIC-8 tape-and-reel packaging configuration. Ensure the component meets RoHS compliance requirements as indicated in official documentation. Confirm that the -40°C to +125°C extended temperature rating aligns with the intended operational environment before finalizing procurement orders.

Selection Notes

Select this component when system design constraints require operation below standard 3.3 V thresholds while maintaining precision. The low 25 uA supply current makes it suitable for energy-efficient applications. Verify that the 600 ns response time satisfies the speed requirements of the target application compared to faster alternatives.

Part Context

This part belongs to the LM393LV series, which extends the functionality of the standard LM393 comparator to lower voltage domains. Unlike the standard LM393 supporting up to 30 V, the LV variant is specifically engineered for modern low-power digital and mixed-signal environments where supply rails are typically 3.3 V or 5 V.

Replacement Considerations

LM393N: Standard voltage version (2V–36V) with higher power consumption; not suitable for sub-2V designs.

FAQ

Does the LM393LVDR support dual power supplies?

Yes, the datasheet indicates it can operate from split power supplies, though it is primarily designed for single-supply low-voltage applications.

What is the maximum input bias current?

The maximum input bias current is specified as 5 pA, ensuring minimal loading on high-impedance signal sources.