LM393LVQDRQ1

Overview

The LM393LVQDRQ1 is a dual low-voltage analog comparator from Texas Instruments, designed for automotive applications. It operates within a supply voltage range of 1.65 V to 5.5 V and features rail-to-rail input capability. The device includes an open-drain output type and offers up to 4 mA output current per channel. Key electrical specifications include a propagation delay of 600 ns, an input offset voltage of 400 µV, and an input bias current of 5 pA. It maintains a quiescent current of 25 µA and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Rail-to-rail input functionality allows the input voltage to reach the positive supply without causing output phase reversal.
• Integrated power-on reset (POR) ensures outputs remain in a high-impedance state until the minimum supply voltage is reached.
• Automotive qualification under AEC-Q100 standards supports operation in harsh environments with extended temperature ranges.

Applications

• Precision voltage monitoring in noisy automotive environments
• Direct replacement for standard LM2xx, LM3xx, and LM290x-Q1 comparators in low-voltage systems
• Battery management systems requiring low quiescent current

Procurement Notes

Verify that the specific part number matches the required automotive grade and package configuration. Confirm that the supplier provides documentation proving AEC-Q100 compliance for the device temperature grade 1. Ensure the ordering suffix corresponds to the correct tape-and-reel packaging format intended for surface-mount assembly processes.

Selection Notes

Select this component when designing circuits that require rail-to-rail inputs at voltages below 5.5 V. It is suitable for replacing older general-purpose comparators where improved performance and lower power consumption are needed. Consider the open-drain output requirement for pull-up resistor implementation in the final circuit design.

Part Context

This device belongs to the LM393LV-Q1 series, which also includes quad-channel variants like the LM339LV-Q1. These devices are engineered to directly replace legacy low-voltage comparators while offering enhanced precision and robustness. The series is specifically tailored for automotive electronics demanding reliability under varying thermal conditions.

Replacement Considerations

LM393LVDR