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मूल्य सूची: Retail Price (B2C) मूल्य सूची
मूल्य सूची: Retail Price (B2C) मूल्य सूची
NE555 Precision Timer IC - 8-Pin DIP

NE555 Precision Timer IC - 8-Pin DIP

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SpecificationDetails
Supply Voltage (Vcc)4.5V to 16V DC
Output CurrentCan source or sink up to 200mA
Timing RangeMicroseconds to Hours
Temperature Stability0.005% per °C
Package TypeDIP-8 (Through-hole)
Operating Temp0°C to 70°C
Trigger Voltage1/3 of Vcc
Price
₹ 8.47 ₹ 8.47
(Tax included)

बारकोड: 8484823

Product Description

The NE555 IC is engineered for high-precision timing applications. It consists of 25 transistors, 2 diodes, and 15 resistors on a single silicon chip. Its output is capable of driving TTL circuits or high-current loads like small relays and buzzers directly. One of its greatest strengths is its voltage independence; the timing interval is determined by an external resistor and capacitor network ($R-C$ network), and the timing remains remarkably stable even if the supply voltage fluctuates.

Key Features

  • Multiple Operating Modes: Functions as a pulse generator, delay timer, or a simple flip-flop.

  • High Output Drive: Supports up to 200mA, allowing it to drive many components without an additional transistor.

  • Adjustable Duty Cycle: By varying the external resistor values, you can precisely control the "ON" vs. "OFF" time of the output signal.

  • Wide Voltage Range: Works perfectly with common 5V microcontrollers as well as 9V or 12V battery systems.

  • Industry Standard: Compatible with almost every electronics tutorial and simulation software globally.

Technical Details

  • Trigger Requirements: Triggered when the voltage at Pin 2 drops below 1/3 of Vcc.

  • Threshold Requirements: Resets the timing cycle when Pin 6 exceeds 2/3 of Vcc.

  • Pinout: 1-GND, 2-Trigger, 3-Output, 4-Reset, 5-Control, 6-Threshold, 7-Discharge, 8-Vcc.

Prototyping and Engineering Tips from Robogears

  • Bypass Capacitor: Always place a 0.1uF ceramic capacitor between Pin 5 (Control) and Ground. This stabilizes the internal voltage divider and prevents "false triggering" caused by electrical noise on your power rails.

  • The "Magic" Formula: For Astable mode (flashing), the frequency is calculated

    Use a 10kΩ potentiometer for $R_2$ to create a variable-speed flasher or motor controller.

  • Current Spikes: The 555 IC creates a small "shoot-through" current spike during switching. To protect sensitive microcontrollers sharing the same power supply, add a 10uF to 100uF electrolytic capacitor across the IC's Vcc (Pin 8) and GND (Pin 1).

  • CMOS vs. Bipolar: This is the standard Bipolar version. If you are building a low-power, battery-only device, you might want to look for the TLC555 (CMOS version), which draws significantly less idle current but has a lower output drive.

Package Includes

  • 1 x NE555 Precision Timer IC (8-Pin DIP)

Disclaimer

Ensure the power supply does not exceed 16V. Prolonged operation at maximum current (200mA) without a small heat sink or proper ventilation can lead to thermal failure.