LM339LV-Q1

The LM339LV-Q1 is a low-voltage quad comparator designed for automotive and industrial applications, manufactured by Texas Instruments. It operates from a single supply voltage ranging from 2.7 V to 5.5 V, making it suitable for systems with tight power constraints. This device features four independent comparators, each capable of high-speed operation with a typical propagation delay of 1.6 µs at 5 V, ensuring rapid response times in real-time control scenarios. Each comparator includes an open-drain output that supports both push-pull and open-collector configurations, offering flexibility in interfacing with various logic families and external circuits. The input common-mode range extends down to the negative supply rail, enabling direct comparison of signals near ground without requiring additional level-shifting circuitry. This feature simplifies design and reduces component count in battery-powered or low-voltage systems. Designed to meet AEC-Q100 Grade 1 qualification standards, the LM339LV-Q1 ensures robust performance under harsh environmental conditions, including wide temperature ranges from –40°C to +125°C. Its low quiescent current—typically 80 µA per comparator—makes it ideal for energy-sensitive applications such as automotive sensors, battery management systems, and portable instrumentation. The device integrates internal hysteresis to minimize oscillation when comparing noisy or slowly changing input signals, enhancing stability in analog signal conditioning tasks. Additionally, its TTL-compatible outputs provide reliable digital switching behavior, while the pinout configuration allows for easy integration into existing PCB layouts without redesign. Common applications include overvoltage/undervoltage detection, level shifting, zero-crossing detection, and sensor interface circuits in automotive electronics such as engine control units (ECUs), ADAS systems, and body control modules. In industrial settings, it serves as a cost-effective solution for process monitoring, relay control, and power supply regulation where precision and reliability are critical. Overall, the LM339LV-Q1 combines low power consumption, wide operating voltage range, high speed, and automotive-grade reliability, making it a versatile and dependable choice for modern electronic designs requiring robust analog signal processing.