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NE555N

Name: NE555N
Rating: 4.7 (12 reviews)

IC OSC SINGLE TIMER 8-DIP

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包 PDIP-8
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規格

Package	Tube
ProductStatus	Obsolete
Type	555 Type, Timer/Oscillator (Single)
Voltage-Supply	4.5V ~ 16V
Current-Supply	7.5 mA
OperatingTemperature	0°C ~ 70°C
Package/Case	8-DIP (0.300, 7.62mm)
SupplierDevicePackage	8-DIP

概述

Description

The NE555N is a highly versatile integrated circuit (IC) used primarily for timer, oscillator, and flip-flop applications. Introduced in 1972 by Signetics, it quickly became popular for its reliability and ease of use. The NE555 can operate in three modes: astable (oscillator), monostable (one-shot timer), and bistable (flip-flop).
In astable mode, it generates a continuous square wave output, making it useful for clock pulses in digital circuits. In monostable mode, it produces a single output pulse of a specified duration in response to an input trigger, suitable for timing applications. In bistable mode, it toggles its output state based on input signals, functioning as a basic memory element.
Typically, the NE555 operates on a voltage range of 4.5V to 15V, with a frequency range of up to several hundred kilohertz, depending on the configuration. Its simple design, low cost, and wide availability make it a staple in electronics projects, from hobbyist applications to more complex commercial products.

Features

The NE555N is a versatile timer IC widely used in various applications. Key features include:
1. Operating Modes: Can function as a monostable (one-shot) or astable (oscillator) timer.
2. Timing Range: Capable of producing time delays from microseconds to hours, depending on external resistors and capacitors.
3. Output Configuration: Can drive loads directly with a maximum output current of 200 mA.
4. Supply Voltage: Operates on a wide voltage range of 4.5V to 15V (up to 18V absolute maximum).
5. Temperature Range: Suitable for industrial applications with an operational temperature range of -55°C to +125°C.
6. Low Power Consumption: Consumes low power in both stable and monostable modes.
7. High Stability: Provides good accuracy and stability for timing applications.
8. Easy to Use: Requires minimal external components for operation.
These features make the NE555N ideal for timing, pulse generation, and oscillator circuits in various electronic applications.

Package

The NE555N is commonly packaged in an 8-pin dual in-line package (DIP). This package type makes it suitable for through-hole mounting on printed circuit boards (PCBs).

Pinout

The NE555N is an integrated circuit timer with a total of 8 pins.
Here’s a brief overview of each pin's function:
1. Pin 1 (GND): Ground reference.
2. Pin 2 (TRIG): Trigger input; a negative pulse on this pin sets the output high.
3. Pin 3 (OUT): Output; provides the timing signal.
4. Pin 4 (RESET): Active-low reset; used to reset the timer.
5. Pin 5 (CTRL): Control voltage; allows modulation of the timing interval.
6. Pin 6 (THRESH): Threshold input; when voltage exceeds 2/3 of the supply voltage, it resets the output.
7. Pin 7 (DISCH): Discharge; connects to the timing capacitor during the discharge phase.
8. Pin 8 (VCC): Supply voltage; provides power to the circuit typically in the range of 4.5V to 15V.
The NE555N can be used in various configurations, including astable, monostable, and bistable modes for timing and pulse generation applications.

Manufacturer

The NE555N timer IC is manufactured by multiple companies, with Texas Instruments, ON Semiconductor, and STMicroelectronics being some of the prominent producers. These companies are semiconductor manufacturers that design and produce a wide range of electronic components, including integrated circuits (ICs), transistors, diodes, and other related products.
Texas Instruments, founded in 1930, is well-known for its innovations in analog and digital semiconductor technologies, including microcontrollers and processors. ON Semiconductor, established in 1999, focuses on a variety of semiconductor solutions for energy-efficient electronics. STMicroelectronics, formed in 1987, specializes in a diverse array of semiconductor technologies, serving various sectors such as automotive, industrial, and consumer electronics. Overall, these companies play a crucial role in the electronics industry by providing essential components for various applications, including timers, oscillators, and signal processing.

Application

The NE555N timer IC is widely used in various applications, including:
1. Astable Multivibrator: Generates square waves for clock pulses.
2. Monostable Mode: Creates time delays and pulse generation.
3. Timers: For timing applications in electronic devices.
4. Oscillators: Produces audio tones and frequency modulation.
5. LED Flasher: Controls blinking patterns for LEDs.
6. Pulse Width Modulation: Used in motor speed control and dimming lights.
7. Frequency Divider: Divides input frequencies for signal processing.

Equivalent

Equivalent products to the NE555N chip include the LM555, TLC555, and LMC555. These variants may differ slightly in specifications, such as voltage range and power consumption, but they serve similar timing and oscillator functions. Always check the datasheets for specific parameter compatibility before substitution.