---
title: "Input Multiplexer"
industry: "Computer, Electronic and Optical Product Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:INPUT_MULTIPLEXER"
  data_integrity_hash: "0fe299cf8e8f62fce8ff293438b73a20"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:INPUT_MULTIPLEXER"
  data_source_uri: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/input-multiplexer.md"
  official_resource_url: "https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/input-multiplexer"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-10 VDC, -10 to +10 VDC differential, 0-20 mA current loop"
    unit: "channels"
engineering_limits:
  max_safe_operating_point:
    value: 60
    unit: "dB"
    consequence: "Dielectric breakdown in CMOS switches at &gt;15 VDC, electromigration in micro-relay contacts at &gt;100 mA continuous current, thermal expansion mismatch in MEMS switches at &gt;85°C"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electrostatic discharge (ESD) exceeding 2 kV HBM"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Integrated ESD protection diodes with 8 kV IEC 61000-4-2 rating and series current-limiting resistors"
  - node_2:
      trigger: "Simultaneous sampling of channels with &gt;5 V potential difference"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Optical isolation barriers between channels and dedicated guard rings in IC layout with 50 μm spacing"
bom_nodes:
  switch-array:
    type: "component"
    urn: "URN:CNFX:ME:SWITCH_ARRAY"
    interface_type: "physical-logic-coupled"
  channel-select-decoder:
    type: "component"
    urn: "URN:CNFX:ME:CHANNEL_SELECT_DECODER"
    interface_type: "physical-logic-coupled"
  output-bufferdriver:
    type: "part"
    urn: "URN:CNFX:ME:OUTPUT_BUFFERDRIVER"
    interface_type: "physical-logic-coupled"
  protection-diodes:
    type: "component"
    urn: "URN:CNFX:ME:PROTECTION_DIODES"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/input-multiplexer.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "c59399c29734db771d068a4aaac71bc6d5b72aa9b892e10cf8fd1b51827c08c4"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Input Multiplexer

## 1. Technical Definition
A switching component that selects and routes multiple analog input signals to a single ADC channel.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-10 VDC, -10 to +10 VDC differential, 0-20 mA current loop**. Failure boundary: **Signal crosstalk exceeding -60 dB isolation, channel-to-channel leakage current &gt; 1 μA, switching frequency degradation below 100 kHz**, Mechanism: **Dielectric breakdown in CMOS switches at &gt;15 VDC, electromigration in micro-relay contacts at &gt;100 mA continuous current, thermal expansion mismatch in MEMS switches at &gt;85°C**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Electrostatic discharge (ESD) exceeding 2 kV HBM | 8 | Gate oxide rupture in CMOS analog switches causing permanent channel short | Integrated ESD protection diodes with 8 kV IEC 61000-4-2 rating and series current-limiting resistors |
| Simultaneous sampling of channels with &gt;5 V potential difference | 8 | Latch-up condition in multiplexer IC drawing &gt;500 mA supply current | Optical isolation barriers between channels and dedicated guard rings in IC layout with 50 μm spacing |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | channels | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Output Buffer/Driver](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/output-bufferdriver.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Signal Generator**, **Oscilloscope**, **Power Supply Unit**  
**Downstream Applications**: Data Acquisition Systems, Test and Measurement Equipment, Industrial Control Systems  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What is the primary function of an input multiplexer in electronic systems?
**A**: An input multiplexer selects and routes multiple analog input signals to a single ADC (Analog-to-Digital Converter) channel, enabling efficient signal processing and data acquisition in systems with limited ADC resources.

### Q: What materials are commonly used in manufacturing input multiplexers?
**A**: Input multiplexers typically use silicon for integrated circuits, copper for conductive traces and contacts, and plastic or ceramic materials for protective packaging to ensure durability and reliable performance.

### Q: What key components make up a typical input multiplexer BOM (Bill of Materials)?
**A**: A standard input multiplexer BOM includes a switch array for signal selection, a channel select decoder for control logic, an output buffer/driver for signal integrity, and protection diodes to safeguard against voltage spikes or reverse currents.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Input Multiplexer](https://cnfx.com/industry/computer-electronic-and-optical-product-manufacturing/product/input-multiplexer)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **4** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: INPUT_MULTIPLEXER | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 531a2cf8
