INDUSTRY COMPONENT

Output Latch

Output latch is a mechanical holding device in comparator arrays that maintains signal states until reset.

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Component Specifications

Definition
An output latch is a critical electromechanical component within comparator arrays that captures and retains binary output signals (high/low states) from comparators. It functions as a memory element that holds the comparator's decision output until explicitly cleared by a reset signal, preventing signal fluctuations from affecting downstream processes. Typically implemented with flip-flop circuits or mechanical locking mechanisms, it ensures stable data transmission in industrial control systems.
Working Principle
The output latch operates on bistable multivibrator principles. When the comparator output triggers the latch's set input, internal gates or mechanical elements change state to capture the signal. This state remains locked regardless of subsequent comparator changes until a reset pulse clears it. In electronic versions, cross-coupled NAND/NOR gates maintain the state; mechanical versions use spring-loaded catches or magnetic holds.
Materials
Housing: Aluminum alloy (e.g., 6061-T6) or engineering plastic (POM); Contacts: Silver-plated copper or beryllium copper; Spring: Stainless steel (302/316); Insulation: Glass-filled nylon or ceramic.
Technical Parameters
  • Reset Time <5ms
  • Hold Current 10mA max
  • Response Time <2ms
  • Mechanical Life 10^7 cycles
  • Operating Voltage 5-24V DC
  • Contact Resistance <50mΩ
  • Operating Temperature -20°C to 85°C
Standards
ISO 13849-1, DIN EN 60947-5-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Output Latch.

output latch comparator array latch signal holding device mechanical latch bistable multivibrator industrial control component flip-flop circuit Output Latch in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Comparator Array

An integrated circuit component containing multiple comparator circuits arranged in a structured array configuration.

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Engineering Analysis

Risks & Mitigation
  • Signal drift due to temperature variations
  • Contact welding from surge currents
  • Reset failure causing system lockup
FMEA Triads
Trigger: Contact oxidation or contamination
Failure: Increased contact resistance leading to signal loss
Mitigation: Use sealed housings with inert gas filling; specify gold-plated contacts for critical applications
Trigger: Spring fatigue in mechanical latches
Failure: Failure to maintain locked position
Mitigation: Implement redundant spring designs; schedule preventive replacement at 80% of rated cycles

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Signal retention time: ±0.5ms; Operating voltage: ±10%
Test Method
IEC 61000-4 series for EMC; MIL-STD-202 for vibration; Continuous cycling test per ISO 13849

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the primary function of an output latch in a comparator array?

To capture and maintain the comparator's output state (high/low) until a reset command is received, preventing transient signal changes from affecting system operations.

How does an electronic output latch differ from a mechanical one?

Electronic latches use semiconductor circuits (flip-flops) for high-speed digital applications, while mechanical latches employ physical catches/springs for environments with electrical noise or where power loss must not affect state retention.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

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.

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