Editorial Technical Reference

Multiplexer

This page explains how Multiplexer 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

A device that selects one of several input signals and forwards it to a single output line

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Product Specifications

Technical details and manufacturing context for Multiplexer

Definition
In a readout circuit, a multiplexer is an electronic component that combines multiple input signals into a single output line, allowing the system to sequentially read data from multiple sources using fewer data lines. It serves as a data selector that routes information from various sensors or channels to the processing unit. The multiplexer operates by using control signals to select which input line is connected to the output. In digital systems, it typically uses binary select lines to choose between 2^n input channels. When a specific combination of control signals is applied, the corresponding input is gated through to the output while other inputs are blocked. This component is commonly used in data acquisition systems, communication interfaces, and test equipment to reduce wiring complexity and improve signal routing efficiency. The directory lists typical reference parameters for multiplexers, including a number of channels ranging from 4 to 16, operating voltage from 3.3 to 5 V DC, bandwidth from 100 to 500 MHz, insertion loss up to 1.5 dB, crosstalk between -40 and -30 dB, switching time from 5 to 20 ns, operating temperature from -40 to 85 °C, storage temperature from -55 to 125 °C, ESD tolerance of ±2000 V (human body model, per IEC 61000-4-2), package type SOIC-16 (per JEDEC MS-012), and weight from 0.5 to 1.5 g. These values are reference ranges and must be verified for the specific model and application. The multiplexer is typically fabricated using silicon, with copper interconnects and plastic packaging. For proper selection, consider the number of input channels, logic level compatibility, bandwidth requirements, signal integrity parameters, and environmental conditions. Always confirm model-specific specifications and standards with the legal manufacturer or supplier before procurement.
Working Principle
The multiplexer operates by using control signals to select which input line is connected to the output. In digital systems, it typically uses binary select lines to choose between 2^n input channels. When a specific combination of control signals is applied, the corresponding input is gated through to the output while other inputs are blocked. The selection is based on the binary value of the control lines, enabling the routing of one of several data sources to a single output. This principle allows efficient sharing of a single data line among multiple sources, reducing the number of required connections in a system.
Common Materials
Silicon, Copper, Plastic
Technical Parameters
ParameterTypical rangeNotes & selection driver
Number of Channels4–16Select based on input signals to multiplex.
Operating Voltage3.3–5 V DCLogic level compatibility.
Bandwidth100–500 MHzHigher bandwidth for high-speed signals.
Insertion Loss≤1.5 dBLower loss for signal integrity.
Crosstalk-40–-30 dBIsolation between channels.
Switching Time5–20 nsPropagation delay from select to output.
Operating Temperature-40–85 °CIndustrial grade range.
Storage Temperature-55–125 °CNon-operating survival range.
ESD Tolerance±2000 VHuman body model.IEC 61000-4-2
Package TypeSOIC-16Surface mount.JEDEC MS-012
Weight0.5–1.5 gVaries with package size.

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
  • Input Buffer Part
    Amplifies and conditions input signals before selection
    Material: Silicon
  • Selector Switch
    Electronic switch that routes selected input to output
    Material: Silicon
  • Control Logic
    Decodes control signals to determine which input is selected
    Material: Silicon
  • Output Driver
    Amplifies the selected signal for transmission to output
    Material: Silicon

Applied To / Applications

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

Readout Circuit
View system integration details
Cell Monitoring Circuit
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Analog Front-End (AFE) IC
View system integration details
Configurable Logic Blocks
View system integration details
Adder/Subtractor Unit
View system integration details
Data Acquisition Systems
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: 0 to 100 psi
isolation: >40 dB
temperature: -40°C to +85°C
input impedance: 50 Ω or 75 Ω
signal frequency: DC to 10 GHz
Media Compatibility
✓ Electronic signals (RF/analog/digital) ✓ Optical signals (fiber optic) ✓ Low-viscosity fluids (hydraulic/pneumatic)
Unsuitable: Abrasive slurry or corrosive chemical environments
Sizing Data Required
  • Number of input channels required
  • Signal type and bandwidth/frequency range
  • Required switching speed and isolation specifications

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Signal Degradation
Cause: Corrosion or contamination of electrical contacts due to moisture ingress, dust accumulation, or chemical exposure, leading to increased resistance and intermittent connections.
Mechanical Wear
Cause: Fatigue failure of switching mechanisms or connectors from repeated cycling under load, exacerbated by vibration, misalignment, or inadequate lubrication.
Maintenance Indicators
  • Intermittent or complete loss of signal output on specific channels, often accompanied by audible clicking or erratic switching behavior.
  • Visible signs of overheating such as discoloration, melting of insulation, or burnt odor near connectors or switching components.
Engineering Tips
  • Implement regular preventive maintenance including contact cleaning with appropriate solvents, inspection for corrosion, and verification of signal integrity using calibrated test equipment.
  • Ensure proper environmental sealing and vibration damping in installation, and adhere to manufacturer-specified load ratings and switching cycles to prevent mechanical overstress.

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 61000-6-2:2016 - Electromagnetic Compatibility (EMC) CE Marking - EU Compliance for Safety, Health, and Environmental Protection

Quoted from the published standard.

Manufacturing Precision
  • Insertion Loss: +/- 0.5 dB
  • Channel-to-Channel Isolation: +/- 1.0 dB
Quality Inspection
  • Bit Error Rate (BER) Test
  • Return Loss Measurement

Manufacturers of Multiplexer

Manufacturer profiles associated with Multiplexer.

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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 6 September 2026

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Frequently Asked Questions

What is the typical number of channels for a multiplexer?

The directory lists a reference range of 4 to 16 channels. The actual number depends on the specific model and application. Always verify with the manufacturer.

What operating voltage is typical for these multiplexers?

The reference operating voltage range is 3.3 to 5 V DC. Confirm the exact voltage requirements for your specific model and logic compatibility.

What is the significance of insertion loss and crosstalk?

Insertion loss (≤1.5 dB) indicates signal attenuation, while crosstalk (-40 to -30 dB) measures isolation between channels. Both affect signal integrity and should be verified for your application.

What package type is commonly used?

The reference package type is SOIC-16, per JEDEC MS-012. Verify the exact package and pinout with the manufacturer for your design.

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

Data Basis

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

Preliminary Technical Classification
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