NE556DBR

Product Overview

Category: Integrated Circuit (IC)

Use: The NE556DBR is a dual precision timer IC that combines two 555 timers in a single package. It is widely used in various electronic applications where timing and pulse generation are required.

Characteristics: - Dual timer functionality - High accuracy and stability - Wide operating voltage range - Low power consumption - Compact package size

Package: NE556DBR is available in an 8-pin SOIC (Small Outline Integrated Circuit) package.

Essence: The NE556DBR is the essence of precise timing and pulse generation, providing a convenient solution for circuit designers.

Packaging/Quantity: The NE556DBR is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 4.5V to 16V
• Operating Temperature Range: -40°C to +85°C
• Timing Capacitance Range: 100pF to 100μF
• Maximum Output Current: 200mA
• Trigger Voltage: 1/3 Vcc
• Reset Voltage: 0.7V

Detailed Pin Configuration

The NE556DBR has 8 pins arranged as follows:

____ 1 | | 8 2 | | 7 3 | | 6 4 | | 5 ------

Pin Description: 1. Control Voltage (CV) 2. Threshold (TH) 3. Discharge (DIS) 4. Ground (GND) 5. Trigger (TR) 6. Output (OUT B) 7. Reset (RESET) 8. Vcc (Positive Power Supply)

Functional Features

1. Dual Timer Functionality: The NE556DBR integrates two independent 555 timers in a single package, providing flexibility for timing applications.

2. High Accuracy and Stability: The IC offers precise timing capabilities with low drift, ensuring reliable performance over a wide range of operating conditions.

3. Wide Operating Voltage Range: The NE556DBR can operate from 4.5V to 16V, making it suitable for various power supply configurations.

4. Low Power Consumption: With its efficient design, the IC consumes minimal power, making it ideal for battery-powered applications.

Advantages and Disadvantages

Advantages: - Dual timer functionality saves board space and reduces component count. - High accuracy and stability ensure reliable timing operations. - Wide operating voltage range allows for versatile use. - Low power consumption prolongs battery life.

Disadvantages: - Limited maximum output current may restrict certain high-power applications. - Lack of built-in protection features may require additional circuitry for robust operation.

Working Principles

The NE556DBR operates based on the principles of the 555 timer IC. It consists of two separate timers that can be configured in various modes, such as astable (free-running oscillator) or monostable (one-shot) mode. The timers rely on external resistors and capacitors to determine the timing characteristics.

In astable mode, the NE556DBR generates a continuous square wave output with adjustable frequency and duty cycle. In monostable mode, it produces a single pulse of a specified duration upon receiving a trigger signal.

Detailed Application Field Plans

The NE556DBR finds extensive application in the following areas:

1. Timing Circuits: The IC is commonly used in applications requiring precise timing, such as clocks, timers, and frequency generators.

2. Pulse Generation: It is utilized for generating accurate pulses in applications like waveform generation, PWM (Pulse Width Modulation), and motor control.

3. Delay Circuits: The NE556DBR is employed in circuits that require specific time delays, such as delay switches, sequential timers, and time-delay relays.

4. Sensors and Detectors: It can be used in conjunction with sensors and detectors to create timing-based systems for various purposes, including motion detection and alarm systems.

Detailed and Complete Alternative Models

1. LM556: A similar dual timer IC manufactured by Texas Instruments.
2. ICM7555: A CMOS version of the 555 timer IC, offering low power consumption and extended temperature range.
3. TLC556: Another dual timer IC with improved performance characteristics, manufactured by Texas Instruments.

These alternative models provide similar functionality to the NE556DBR and can be considered as substitutes based on specific requirements.

In conclusion, the NE556DBR is a versatile dual precision timer IC that offers high accuracy, stability, and flexibility in timing applications. Its compact package size and low power consumption make it an ideal choice for various electronic designs requiring precise timing and pulse generation.