{"product_id":"lm339","title":"LM339","description":"\u003cp\u003e\u003cstrong\u003eLM139 Quad Precision Voltage Comparator IC\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe LM139 series consists of four independent precision voltage comparators designed for accurate voltage level detection and signal comparison applications. Each comparator compares two input voltages and provides a digital output indicating which input is higher. The device is optimized for single-supply operation over a wide voltage range, while also supporting dual-supply configurations.\u003c\/p\u003e\n\u003cp\u003eOne of the key features of the LM139 is its very low input offset voltage, typically as low as 2 mV max, which ensures high accuracy across all four internal comparators. The input common-mode voltage range includes ground, allowing the device to correctly operate even when the input signal is near zero volts in single-supply systems.\u003c\/p\u003e\n\u003cp\u003eThe outputs of the LM139 are open-collector type, enabling wired-AND configurations by connecting multiple outputs together. This makes the IC highly useful in logic control and decision-making circuits. It can directly interface with TTL and CMOS logic levels, and when used with dual supplies, it can also interface with MOS logic systems. Its low power consumption is independent of supply voltage, making it efficient for continuous operation.\u003c\/p\u003e\n\u003cp\u003eThe LM139 family is widely used in industrial, automotive, and embedded systems. Different variants are designed for various temperature ranges, including industrial and military-grade applications, ensuring reliable operation in harsh environments.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eQuad independent voltage comparators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow input offset voltage (up to 2 mV max)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSingle-supply or dual-supply operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWide supply voltage range (2V to 36V difference for dual supply)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInput common-mode range includes ground\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow power supply current independent of voltage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOpen-collector outputs for wired-AND operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTTL and CMOS compatible outputs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh accuracy voltage comparison\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWide temperature range variants available\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eStable and reliable performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eVoltage level detection circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWindow comparators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eZero-crossing detectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBattery monitoring systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSignal conditioning circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial control systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAutomotive electronics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEmbedded systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAlarm and protection circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eADC pre-processing circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLogic interface circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSensor threshold detection systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"electro robo store","offers":[{"title":"Default Title","offer_id":52755119964436,"sku":"MT0728","price":11.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0979\/6590\/0052\/files\/lm.webp?v=1783328607","url":"https:\/\/electro-robo.com\/products\/lm339","provider":"Electro Robo Store","version":"1.0","type":"link"}