NE556DR

Overview

NE556DR is a versatile integrated circuit (IC) that belongs to the NE556 series. It is widely used in various electronic applications due to its reliable performance and flexible functionality. This encyclopedia entry provides an overview of NE556DR, including its category, use, characteristics, package, essence, packaging/quantity, specifications, detailed pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.

Category

NE556DR falls under the category of dual precision timers. It is specifically designed to provide accurate timing functions in electronic circuits.

Use

The primary use of NE556DR is to generate precise time delays or oscillations in electronic systems. It can be employed in a wide range of applications such as pulse generation, frequency division, timing control, and waveform shaping.

Characteristics

NE556DR exhibits several key characteristics that make it suitable for various electronic projects. These include:

• High accuracy: NE556DR offers precise timing capabilities with low variations.
• Wide operating voltage range: It can operate within a broad voltage range, typically from 4.5V to 16V.
• Low power consumption: NE556DR consumes minimal power, making it energy-efficient.
• Temperature stability: It maintains stable performance across different temperature conditions.
• Compact size: The IC comes in a compact package, enabling easy integration into electronic circuits.

Package and Essence

NE556DR is available in a standard 14-pin dual in-line package (DIP). The essence of this IC lies in its ability to provide two independent precision timers within a single package, offering enhanced convenience and space-saving benefits.

Packaging/Quantity

NE556DR is commonly packaged in reels or tubes, containing a specific quantity of ICs per package. The exact packaging and quantity may vary depending on the manufacturer and supplier.

Specifications

• Supply Voltage Range: 4.5V to 16V
• Operating Temperature Range: -40°C to +85°C
• Timing Capacitance Range: 0.1μF to 100μF
• Output Current: 200mA (max)
• Trigger Voltage: 2/3 VCC
• Reset Voltage: 0.7VCC

Pin Configuration

NE556DR features a total of 14 pins, each serving a specific function. The detailed pin configuration is as follows:

1. GND (Ground)
2. TRIG (Trigger Input)
3. OUT (Output)
4. RESET (Reset Input)
5. CTRL (Control Voltage Input)
6. THRES (Threshold Input)
7. DISCH (Discharge Output)
8. VCC (Positive Power Supply)

9-14. These pins are repeated for the second timer within the IC.

Functional Features

NE556DR offers several functional features that contribute to its versatility and usefulness in electronic circuits. Some notable features include:

• Dual timers: NE556DR integrates two independent precision timers, allowing simultaneous or separate timing operations.
• Adjustable timing: The timing characteristics can be easily adjusted using external resistors and capacitors.
• Monostable and astable operation modes: NE556DR supports both monostable and astable modes, providing flexibility in generating different types of waveforms.
• Wide frequency range: It can generate frequencies ranging from microseconds to hours, catering to various timing requirements.

Advantages and Disadvantages

Advantages

• Compact size and dual timer functionality save space and reduce component count.
• High accuracy and stability ensure reliable timing performance.
• Low power consumption contributes to energy efficiency.
• Versatile timing options enable diverse applications.
• Cost-effective solution for precise timing needs.

Disadvantages

• Limited output current may restrict usage in high-power applications.
• External components (resistors and capacitors) are required for precise timing configuration.
• Not suitable for applications requiring extremely fast or slow timing intervals.

Working Principles

NE556DR operates based on the principles of an astable or monostable multivibrator. In the astable mode, it continuously oscillates between high and low states, generating a square wave output. In the monostable mode, it produces a single pulse of a specific duration upon receiving a trigger signal. The timing characteristics are determined by external resistors and capacitors connected to the IC.

Detailed Application Field Plans

NE556DR finds extensive application in various electronic fields, including:

1. Timing circuits: NE556DR is commonly used in applications that require precise time delays, such as timers, clocks, and sequential control systems.
2. Pulse generation: It is employed in pulse generators for generating accurate pulses with specific durations and frequencies.
3. Frequency division: NE556DR can be utilized in frequency dividers to divide input frequencies by specific ratios.
4. Waveform shaping: It is used in waveform shaping circuits to modify and shape input waveforms according to desired specifications.