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الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > الدوائر المتكاملة الخطية التناظرية > LM393N

LM393N

Dual comparator, open-collector output, 2-36V, 1.3us response, 8-PDIP

11642

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جزء الشركة المصنعة ： جزء الشركة المصنعة

LM393N

الحزمة ： الحزمة

8-PDIP

العلامة التجارية ： العلامة التجارية
فئات المنتجات:：فئات المنتجات
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الوصف

نظرة عامة على المنتج

The LM393N from Texas Instruments is a dual differential comparator with open-collector outputs, operating from 2V to 36V. With 1.3us typical response time and 0.4mA supply current, it is the industry standard for voltage comparison and threshold detection. Packaged in 8-PDIP.

المواصفات الرئيسية

القنوات 2 (Dual)
جهد الإمداد 2V to 36V (single) or +/-1V to +/-18V
Response Time 1.3us (typ)
جهد إزاحة المدخلات +/-1mV (typ)
تيار تحيز الإدخال 25nA (typ)
Supply Current 0.4mA (typ, both comparators)
نوع الإخراج Open-collector (NPN)
Output Sink Current 16mA (typ)
الحزمة 8-PDIP
درجة حرارة التشغيل 0 to +70 C

الميزات

  • Wide supply voltage: 2V to 36V single supply
  • Open-collector outputs for wired-OR
  • Low input offset: +/-1mV typical
  • 1.3us typical response time
  • 0.4mA total supply current
  • Output compatible with TTL, MOS, and CMOS logic

التطبيقات

  • Voltage threshold detection
  • Window comparator circuits
  • Oscillator and timer circuits
  • Sensor signal conditioning

The LM393N from Texas Instruments is the industry standard dual differential comparator with open-collector outputs. It operates from a single 2V to 36V supply and features 1.3us typical response time, +/-1mV typical input offset voltage, and only 0.4mA total supply current. The open-collector outputs allow wired-OR connections and interface with any logic voltage from 0 to VCC through external pull-up resistors. When the non-inverting input exceeds the inverting input, the output transistor turns off (high impedance); when the inverting input is higher, the output transistor turns on, sinking current to ground. This flexible output structure makes the LM393N suitable for a wide range of threshold detection, window comparison, and oscillator applications.

The LM393N uses a differential input stage followed by a gain stage and an open-collector NPN output transistor. The differential pair compares the two input voltages: when IN+ > IN-, the gain stage turns off the output transistor (output is high impedance, pulled high by external resistor); when IN+ < IN-, the gain stage turns on the output transistor (output saturates to near ground). The open-collector structure means the output can only sink current (pull to ground), never source it. This allows multiple comparator outputs to be wire-ORed together and the output pull-up voltage to be different from the comparator supply voltage. The 1.3us response time is the propagation delay from input crossing to output transition.

دبوس الاسم الوظيفة
1 1حول Channel 1 output (open collector)
2 1في- Channel 1 inverting input
3 1في+ Channel 1 non-inverting input
4 GND Ground / negative supply
5 2في+ Channel 2 non-inverting input
6 2في- Channel 2 inverting input
7 2سابقًا Channel 2 output (open collector)
8 VCC Positive supply (2-36V)
  • Voltage threshold detection with hysteresis for sensor signal conditioning
  • Window comparator circuits using two channels for over/under voltage detection
  • Oscillator circuits with open-collector output driving LEDs or relays
  • Wired-OR fault detection with multiple comparator outputs on a shared bus
الطراز الشركة المصنعة الفرق الرئيسي
LM339N TI Quad comparator, same architecture
LM2903N TI Automotive grade, -40 to +125C
LMV393 TI Low voltage (2.7-5V), lower power
TS881 ST Nanopower comparator, 210nA
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Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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