# 4071

> integrated circuit

**Wikidata**: [Q30312592](https://www.wikidata.org/wiki/Q30312592)  
**Source**: https://4ort.xyz/entity/4071

## Summary
The 4071 is an integrated circuit belonging to the 4000 series family of CMOS logic ICs. It functions as a quad two-input OR gate, widely used in digital electronics for logical operations.

## Key Facts
- Instance of: Product model, integrated circuit
- Part of series: 4000 series integrated circuits
- Function: Quad two-input OR gate
- Technology: CMOS (Complementary Metal-Oxide-Semiconductor)
- Image: [Philips HEF4071BP on printed circuit board](https://commons.wikimedia.org/wiki/Special:FilePath/DOV-1X_-_Philips_HEF4071BP_on_printed_circuit_board-9796.jpg)
- Commons category: 4071 (CMOS)
- Wikidata description: Integrated circuit
- Sitelink count: 2

## FAQs
### Q: What is the 4071 used for?
A: The 4071 is used as a quad two-input OR gate in digital circuits. It performs logical OR operations and is commonly found in applications requiring combinational logic, such as signal processing and control systems.

### Q: Which series does the 4071 belong to?
A: The 4071 belongs to the 4000 series of integrated circuits, which are known for their low power consumption and wide voltage range, making them suitable for battery-powered devices.

### Q: Is the 4071 still in production?
A: While original versions may no longer be manufactured, modern equivalents under different brand names continue to be produced and used due to the enduring utility of the 4000-series architecture.

## Why It Matters
The 4071 plays a foundational role in digital electronics as part of the influential 4000 series of CMOS logic ICs. These chips became industry standards because of their reliability, low power usage, and compatibility across various operating voltages. As a basic building block in digital design—specifically implementing the OR function—it enables engineers to construct more complex logical behaviors in circuits. Its widespread adoption made it a staple component in educational labs, hobbyist projects, and commercial products during the rise of digital technology.

## Notable For
- Being part of the historically significant 4000 series CMOS logic family
- Providing four independent OR gates in a single package
- Low power consumption typical of CMOS technology
- Wide supply voltage range (typically 3V to 18V), enhancing versatility
- Longevity and continued relevance in teaching and prototyping environments

## Body
### Overview
The 4071 is a member of the 4000 series of integrated circuits, specifically designed using CMOS (Complementary Metal-Oxide-Semiconductor) technology. This places it among some of the most versatile and energy-efficient digital logic components ever developed.

### Technical Specifications
- **Functionality**: Quad two-input OR gate
- **Package Type**: Typically DIP (Dual In-line Package)
- **Input Voltage Range**: Supports 3V to 18V (varies with manufacturer and variant)
- **Technology**: CMOS
- **Number of Gates**: Four independent OR gates per chip

### Role in Digital Circuits
As a standard logic gate IC, the 4071 implements Boolean OR operations:
- Output is HIGH if at least one input is HIGH
- Used extensively in combinational logic designs
- Compatible with other members of the 4000 series for modular system design

### Historical Context
Part of the broader 4000 series introduced by multiple semiconductor manufacturers starting in the late 1960s and early 1970s, these ICs were pivotal in transitioning electronic systems toward lower power consumption and higher integration density. The 4071 remains representative of this era's innovation in portable and battery-operated digital systems.

### Applications
Common uses include:
- Signal routing and decision-making in embedded systems
- Educational demonstrations of Boolean algebra
- Prototyping platforms for digital logic experiments
- Industrial controls and automation equipment

Its simple yet essential functionality ensures ongoing use despite advances in programmable logic and microcontrollers.