Rohm Semiconductor
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LM393ST
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LM393ST

Product Overview

Category: Integrated Circuit
Use: Voltage Comparator
Characteristics: Low power consumption, wide voltage range, dual differential inputs
Package: TO-92
Essence: High precision voltage comparison
Packaging/Quantity: 100 pieces per pack

Specifications

  • Supply Voltage: 2V to 36V
  • Input Offset Voltage: 2mV
  • Input Bias Current: 25nA
  • Response Time: 1.3μs
  • Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

  1. Inverting Input (-)
  2. Non-Inverting Input (+)
  3. Output
  4. Ground
  5. Vcc

Functional Features

  • Wide supply voltage range
  • Low input offset current
  • Compatible with TTL, DTL, ECL, MOS, and CMOS logic
  • Low output saturation voltage

Advantages and Disadvantages

Advantages: - Low power consumption - High precision voltage comparison - Wide operating temperature range

Disadvantages: - Limited output current capability - Single-supply operation only

Working Principles

LM393ST is a voltage comparator that compares the voltages at its two inputs and produces an output based on the comparison. It operates by amplifying the voltage difference between the inputs and driving the output to a high or low state depending on the result of the comparison.

Detailed Application Field Plans

  1. Battery Management Systems: Used for overvoltage and undervoltage protection in battery management circuits.
  2. Signal Conditioning: Employed in signal conditioning circuits to compare analog signals and trigger digital outputs.
  3. Switching Power Supplies: Utilized to monitor the output voltage and provide feedback for regulating the power supply.

Detailed and Complete Alternative Models

  1. LM2903: Dual voltage comparator with similar specifications and pin configuration.
  2. LM339: Quad voltage comparator offering multiple comparison channels in a single package.
  3. LM311: Voltage comparator with complementary output and adjustable hysteresis.

LM393ST is a versatile voltage comparator widely used in various electronic applications due to its high precision and wide operating range.

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기술 솔루션에 LM393ST 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.

  1. What is LM393ST?

    • LM393ST is a dual voltage comparator integrated circuit that is commonly used in electronic circuits to compare two voltages and determine their relationship.

  2. What are the typical applications of LM393ST?

    • LM393ST is often used in applications such as voltage monitoring, level detection, signal conditioning, and motor control.

  3. What is the operating voltage range of LM393ST?

    • The operating voltage range of LM393ST is typically between 2V and 36V.

  4. How many comparators are there in LM393ST?

    • LM393ST contains two independent voltage comparators within a single package.

  5. What is the output drive capability of LM393ST?

    • The output of LM393ST can typically sink or source up to 16mA of current.

  6. What is the input offset voltage of LM393ST?

    • The input offset voltage of LM393ST is typically around 2mV.

  7. Can LM393ST operate in a wide temperature range?

    • Yes, LM393ST is designed to operate over a wide temperature range, typically from -40°C to 125°C.

  8. What are the key features of LM393ST?

    • Some key features of LM393ST include low power consumption, wide supply voltage range, and compatibility with TTL, DTL, ECL, MOS, and CMOS logic systems.

  9. How is LM393ST typically packaged?

    • LM393ST is commonly available in small outline packages such as SOIC (Small Outline Integrated Circuit) and PDIP (Plastic Dual In-line Package).

  10. Are there any common pitfalls to be aware of when using LM393ST?

    • One common pitfall is ensuring proper decoupling and bypass capacitors are used to minimize noise and stabilize the operation of LM393ST in the circuit. Additionally, attention should be paid to input voltage ranges and limitations to avoid damaging the device.