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Rochester Electronics LM393N Environmental and export classification status description

The LM393N is a dual voltage comparator. It contains two independent voltage comparators designed to operate from a single supply over a wide range of voltages. The LM393N is primarily used for comparing two voltage levels. When the voltage at the inverting input exceeds the voltage at the non-inverting input, the output changes state. This IC features an open-collector output, which allows it to interface with different voltage levels. Functions - Voltage Comparison: Compares two input voltage levels. - Open-Collector Output: Allows for wired-AND configurations and interfacing with different supply voltages. - Wide Supply Voltage Range: Can operate from a single supply voltage of 2V to 36V or dual supplies of ±1V to ±18V. - Low Input Bias Current: Suitable for interfacing with high-impedance sources. Applications - Level Shifting: Used in systems where different voltage levels need to be detected or shifted. - Overvoltage and Undervoltage Detection: Protects circuits by providing alerts or shutting down outputs when voltage levels are outside of defined thresholds. - Signal Conditioning: In signal processing applications to condition signals for further processing. - Window Comparators: Used in applications to check if a voltage level is within a certain range. Alternative Parts - LM2903: A dual comparator similar to the LM393N but with two comparators on a single chip. - LM358: A dual operational amplifier that can also be utilized for voltage comparison with additional components. - TLV3701: A high-speed comparator with low supply voltage operation. - MAX9034: A precision comparator with fast response time and low power consumption. Embedded Modules While there might not be specific embedded modules dedicated solely to the LM393N, it is commonly found on various prototyping boards and modules, such as: - Arduino Sensor Shields: Using the LM393N for interfacing with sensors. - Voltage Level Detectors: Modules designed to provide voltage comparison for different sensors. - DIY Electronics Kits: Often included for educational and experiment purposes. Q&A Section Q1: What is the main function of the LM393N? A1: The LM393N is designed as a dual voltage comparator that compares two input voltage levels and changes its output state based on which voltage is higher. Q2: Can I use the LM393N with a single supply? What is the supply voltage range? A2: Yes, the LM393N can be used with a single supply. The supply voltage range is from 2V to 36V. Q3: What type of output does the LM393N have? A3: The LM393N has an open-collector output, which allows it to be used in wired-AND configurations or to interface with different voltage levels. Q4: How can the LM393N be applied in overvoltage detection? A4: In overvoltage detection circuits, the LM393N can compare a reference voltage (set to a desired threshold) with the monitored voltage. If the monitored voltage exceeds the reference, the output of the comparator can trigger an alert or a shutdown mechanism. Q5: Are there alternatives to the LM393N that I can use in my design? A5: Yes, alternatives include the LM2903, which is a dual comparator, the LM358 operational amplifier, and the TLV3701 high-speed comparator. Each alternative has its own specifications that may fit different application requirements.