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> Other > The Ultimate Guide to NE555N VS NE555P

The Ultimate Guide to NE555N VS NE555P

업데이트 시간: 2023-09-26 13:42:49


In electronics and the art of crafting circuits, the paramount factors are precision and performance. This is the juncture where integrated circuits (ICs) assume a pivotal role. Among the IC options, NE555N and NE555P are favored selections, serving as flexible timing components across diverse electronic applications.

Although NE555N and NE555P ICs bear a semblance in nomenclature and purpose, they possess distinctive attributes capable of exerting a profound influence on the performance of your endeavor. Whether you are crafting a timing mechanism, generating pulses, or engaging in any other application, the choice between NE555N and NE555P carries significant weight.

This article will thoroughly explore the essential distinctions, resemblances, and real-world utility of NE555N and NE555P. We aim to equip you with the comprehensive insights required to make an informed choice for your upcoming project. Without further ado, let us plunge into NE555N versus NE555P, enhancing your electronic designs with the utmost precision and dependability.

Overview of NE555N and NE555P

Description of NE555N

The NE555N monolithic timing circuit is a remarkably reliable controller, proficient in generating precise time intervals or oscillations. When configured for time delay operation, the duration is meticulously regulated using just one external resistor and capacitor. When operating as a stable oscillator, the free-running frequency and duty cycle are meticulously controlled using two external resistors and one capacitor. This circuit can be triggered and reset by descending waveforms, and its output configuration can either source or sink up to 200 mA of current.


Description of NE555P

The NE555P is a precision timing component renowned for generating precise time intervals and enabling oscillations. Its time-delay or monostable mode relies on a singular external resistor and capacitor network to control the timed interval. In the a-stable mode, it grants independent control over frequency and duty cycle, achieved through the involvement of two external resistors and a sole external capacitor.

Conventionally, the threshold and trigger levels rest at around two-thirds and one-third, correspondingly, of VCC. Notably, these levels can be tailored by utilizing the control voltage terminal. When the trigger input descends below the trigger level, it sets the flip-flop, inducing a high output state. Conversely, if the trigger input surpasses the trigger level while the threshold input exceeds the threshold level, it leads to a reset of the flip-flop, resulting in a low output state. The reset (RESET) input can supersede all other inputs and can be employed to instigate a fresh timing cycle. The flip-flop resets upon the transition of RESET to a low state, causing the output to go low. It establishes a low-impedance pathway connecting discharge (DISCH) to the ground in a low output state.

Notably, the output circuit can source or sink current, accommodating loads of up to 200 mA. Its operation is well-defined within the supply range of 5 V to 15 V, and when supplied with 5 V, the output levels align seamlessly with TTL inputs.


NE555N vs NE555P: Differences

When comparing NE555N and NE555P integrated circuits (ICs), several key differences can significantly impact your choice for a specific electronic project. Let's explore these distinctions in detail:

1. Manufacturer

2. Packaging and Pin Configuration:

  • NE555N: NE555N typically comes in a DIP-8 (Dual Inline Package) configuration, a through-hole package. It features eight pins and is easy to use with a breadboard or on a PCB (Printed Circuit Board).

  • NE555P: NE555P also comes in a DIP-8 package, similar to NE555N. This package offers compatibility with various circuit design setups.

3. Operating Voltage Range:

  • NE555N: NE555N generally operates within a voltage range of 4.5V to 16V. This range makes it suitable for a wide range of low to moderate voltage applications.

  • NE555P: NE555P has a slightly broader operating voltage range, typically from 4.5V to 18V. This extended range can be advantageous in applications requiring a higher voltage tolerance.

4. Power Consumption:

NE555N: NE555N tends to consume slightly more power compared to NE555P. If power efficiency is a critical concern for your project, this distinction may influence your choice.

5. Temperature Range:

  • NE555N: NE555N typically has a wider temperature range for reliable operation, often from -55°C to 125°C. This makes it suitable for applications where extreme temperature variations may occur.

  • NE555P: NE555P may have a narrower temperature range, typically from 0°C to 70°C. While this range is sufficient for many applications, it may not be suitable for extreme environments.

NE555N Datasheet

NE555P Datasheet

NE555N vs NE555P: Similarities

While NE555N and NE555P exhibit distinct differences, they also share numerous resemblances that render them prominent and multifaceted components within electronics. Below, we elucidate some of the principal similarities between these two integrated circuits (ICs):

1. Fundamental Purpose:

NE555N and NE555P ICs belong to the NE555 timer IC family and are endowed with the same fundamental purpose as timers and oscillators. They excel at generating precise time intervals, pulse sequences, and frequency signals.

2. Pin Configuration:

Notably, NE555N and NE555P boast identical pin configurations, simplifying their interchangeability in diverse circuits without necessitating substantial modifications. Any IC of the 555 families has the same pinouts, though not necessarily the same specifications. CMOS 555 variants, like the TI TLC555 retailed by Radio Shack or the 7555, exhibit strikingly distinct specifications while maintaining consistent pin configurations. In numerous instances, they can seamlessly substitute each other. CMOS 555s offer significantly broader power supply tolerance, reduced drive requirements, and exhibit considerably lower current draw.

NE555 Pinout.jpg

3. Common 555 Timer Core:

Both ICs are constructed around the shared 555 timer core, encompassing internal voltage dividers, comparators, flip-flops, and a discharge transistor. This core constitutes the foundation for their adeptness in precisely executing timing functions.

4. Versatility:

NE555N and NE555P are renowned for their versatility, effortlessly accommodating a broad spectrum of applications. They prove invaluable in rudimentary undertakings like LED flashing and pulse generation while also demonstrating prowess in more intricate endeavors such as Pulse Width Modulation (PWM) control and tone generation.

5. Widespread Accessibility:

Both ICs enjoy widespread availability and can be readily procured from electronics suppliers. This accessibility extends a welcoming embrace to both hobbyists and professionals alike, ensuring their universal utility.

Features Comparison

NE555N Features

  • Swift turn-off time

  • Supports a maximum operating frequency exceeding 500 kHz

  • Offers timing flexibility spanning from microseconds to hours

  • Functional in both astable and monostable modes

  • Capable of sourcing or sinking up to 200 mA of current

  • Adjustable duty cycle

  • TTL compatibility

  • Demonstrates exceptional temperature stability at 0.005% per °C

  • Presents both normally on and normally off output states

NE555P Features

  • Timing flexibility spanning from microseconds to hours

  • Operable in both astable and monostable modes

  • Customizable duty cycle

  • TTL-compatible output with the capability to either sink or source up to 200 mA

  • Comprehensive parameter testing is conducted for products adhering to MIL-PRF-38535 unless specified otherwise. For all other products, the production process may not encompass testing for all parameters.

Applications Comparison

NE555N Applications

  • Precision timing

  • Pulse generation

  • Sequential timing

  • Time delay generation

  • Pulse width modulation

  • Pulse position modulation

  • Linear ramp generation

NE555P Applications

  • Fingerprint Biometrics

  • Iris Biometrics

  • RFID Reader

  • Pulse generation

  • Time delay generation

  • Sequential timing

  • Precision timing

  • Pulse width modulation

  • Pulse position modulation

  • Linear ramp generation


In the NE555N vs. NE555P debate, it's clear that these ICs are closely matched in terms of performance and applications. The difference between these ICs is mostly the manufacturer. Your choice ultimately depends on factors such as availability and specific project needs. Whichever you choose, rest assured that both NE555N and NE555P are reliable and versatile components for your electronic endeavors.

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  • Are NE555N and NE555P interchangeable in circuits?
  • They have the same pin configurations, making them easily interchangeable in various circuits.

  • Are NE555N and NE555P suitable for low-power applications?
  • NE555N and NE555P have low power consumption, rendering them ideal for low-power electronic devices.

  • What is the maximum attainable frequency using NE555N and NE555P?
  • NE555P Frequency: 100kHz; NE555N Frequency: 500kHz.

  • Can NE555N or NE555P be employed in precision timing timer circuits?
  • Certainly, both ICs are frequently utilized in timer circuits demanding precise timing functionality.

  • What is the function of NE555P?
  • These components are precise timing circuits that can generate precise time intervals or oscillations. In the time-delay or monostable operational mode, the duration of the timed interval is regulated by a solitary external resistor and capacitor network.

  • What is the difference between NE555 and 555 timer?
  • Typically, within a 555 timer, the output transitions to a high state when the voltage at pin 2 (trigger) falls below 1/3VCC, and it switches to a low state when the voltage at pin 6 (threshold) rises above 2/3VCC. However, in the case of the NE555, if the trigger pin goes low, even when the threshold pin is in a high state, the output will assume a low state.

  • What is the supply voltage of ne555p?
  • 5 V to 15 V.

  • How many pins of NE555P?
  • 8 pins.

Ratings and Reviews





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