Editorial Technical Reference

Voltage Comparator / Logic Gate

This page explains how Voltage Comparator / Logic Gate is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Electronic component that compares input voltages and outputs digital logic levels based on the comparison, used for signal processing and decision-making in delay circuits.

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Product Specifications

Technical details and manufacturing context for Voltage Comparator / Logic Gate

Definition
A voltage comparator/logic gate is an integrated circuit component within delay circuits that compares two input voltage signals and produces a digital output (high or low logic level) based on which input is higher. In delay circuit applications, it serves as the decision-making element that triggers timing operations, controls signal propagation delays, and enables precise timing functions by converting analog voltage differences into digital control signals. The component is manufactured using silicon semiconductor technology with metal interconnects and is typically housed in plastic or epoxy packaging. It operates over a supply voltage range of 2–36 V DC, with an input offset voltage of ±5 mV at 25°C, input bias current of 25–250 nA, and response time of 0.3–1.3 µs for 100 mV overdrive. Output current capability is 16–20 mA (sink or source). The industrial-grade operating temperature range is -40–85°C, with a storage range of -65–150°C. Maximum power dissipation at 25°C is 500–1000 mW. Standard package types include SOP-8 and DIP-8. ESD tolerance is 2–4 kV (HBM model) per IEC 61000-4-2. These parameters are directory reference ranges and must be confirmed for the specific model and application with the legal manufacturer or supplier. The component is used in delay circuits for signal processing and decision-making, where it compares input voltages and outputs digital logic levels. It is a component in the computer, electronic, and optical product manufacturing industry. Always verify model-specific values and standards with the manufacturer or supplier before procurement or design.
Working Principle
The component operates by comparing the voltage at its non-inverting (+) input with the voltage at its inverting (-) input. When the non-inverting input voltage exceeds the inverting input voltage, the output switches to a high logic state (typically near the supply voltage). When the inverting input voltage is higher, the output switches to a low logic state (typically near ground). This binary output controls subsequent circuit elements to create precise timing delays. The comparison is performed by a differential input stage, and the output is a digital logic level that can drive other logic circuits or loads within the specified output current range.
Common Materials
Silicon semiconductor, Metal interconnects, Plastic/epoxy packaging
Technical Parameters
ParameterTypical rangeNotes & selection driver
Supply Voltage2–36 V DCSingle or dual supply
Input Offset Voltage±5 mVAt 25°C
Input Bias Current25–250 nADepends on input stage
Response Time0.3–1.3 µsFor 100 mV overdrive
Output Current16–20 mASink or source capability
Operating Temperature Range-40–85 °CIndustrial grade
Storage Temperature Range-65–150 °CNon-operating
Power Dissipation500–1000 mWMaximum at 25°C
Package TypeSOP-8, DIP-8Standard IC packages
ESD Tolerance2–4 kVHBM modelIEC 61000-4-2

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Differential Input Stage Part
    Amplifies the voltage difference between the two input signals
    Material: Silicon transistors
  • Output Driver
    Converts the amplified signal to appropriate logic levels and drives the output
    Material: Silicon transistors, metal interconnects
  • Reference Circuit Part
    Provides stable reference voltages for comparison operations
    Material: Silicon resistors, transistors

Application & selection

Application Fit & Sizing Matrix

Operational Limits
pressure: Not applicable (solid-state electronic component)
other spec: Supply voltage range: 2V to 36V, Input offset voltage: ±1mV to ±5mV, Response time: 1ns to 100ns
temperature: -40°C to +125°C (industrial grade)
Media Compatibility
✓ Printed circuit board assemblies ✓ Control system signal conditioning circuits ✓ Sensor interface modules
Unsuitable: High-voltage arc environments (>1000V)
Sizing Data Required
  • Supply voltage range requirement
  • Required response time/speed
  • Input voltage comparison threshold

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Output Stuck at High or Low
Cause: Internal transistor failure due to overvoltage, electrostatic discharge (ESD), or thermal stress exceeding semiconductor limits
Excessive Propagation Delay or Timing Errors
Cause: Degradation of internal components from prolonged operation at high temperatures, voltage fluctuations, or aging effects on semiconductor junctions
Maintenance Indicators
  • Inconsistent or erratic output signals during operation (e.g., flickering LED indicators, unstable relay switching)
  • Audible buzzing or crackling from associated circuitry, indicating potential voltage instability or arcing
Engineering Tips
  • Implement proper voltage regulation and filtering in the power supply to prevent spikes and ensure stable operating conditions within datasheet specifications
  • Maintain adequate cooling and ventilation in the enclosure to keep junction temperatures below maximum ratings, and use ESD protection during handling

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
IEC 60747-14: Semiconductor devices - Part 14: Semiconductor sensors - Voltage comparators ANSI/IEEE Std 91-1984: Graphic Symbols for Logic Functions EN 60747-14:2003/A1:2009: Semiconductor devices - Voltage comparators (CENELEC adoption of IEC standard)

Quoted from the published standard.

Manufacturing Precision
  • Input offset voltage: +/- 5mV
  • Propagation delay: +/- 10ns
Quality Inspection
  • Electrical parameter testing (VOH, VOL, VIH, VIL)
  • Environmental stress screening (temperature cycling, burn-in)
Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Voltage Comparator / Logic Gate

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

SHENZHEN WDJ SEMICONDUCTORS TECHNOLOGY CO.,
Shenzhen, Guangdong, CN
Also makes: Voltage Regulators, Motor Driver
Listed on the company's own website · profile compiled by CNFX from public sources
Listed there as: “逻辑门 logic gate”
View source page ↗ wdj-ic.com · recorded 2026-09-15
View profile Send enquiry

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Frequently Asked Questions

What is the typical supply voltage range for this component?

The supply voltage range is 2–36 V DC, supporting single or dual supply configurations. Confirm the exact range for the specific model with the manufacturer.

What is the response time of this comparator?

The response time is 0.3–1.3 µs for a 100 mV overdrive. This indicates how quickly the output changes state after an input difference is applied.

What package types are available?

Standard IC packages include SOP-8 and DIP-8. Other package options may exist; verify with the supplier.

What is the ESD tolerance and standard?

The ESD tolerance is 2–4 kV (HBM model) per IEC 61000-4-2. This is a reference value; ensure the actual model meets your application's ESD requirements.

Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Related equipment

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Delay Circuit
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Voltage Comparator / Logic Gate.

logic gate

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 13 October 2026

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