SparkFun
555 Timer
The classic 555 timer/oscillator IC from Texas Instruments — one of the most versatile and widely used integrated circuits in electronics. With just a few ex...
The classic 555 timer/oscillator IC from Texas Instruments — one of the most versatile and widely used integrated circuits in electronics. With just a few external resistors and capacitors, it can generate timing delays from microseconds to hours, produce square wave oscillations, and drive LEDs, buzzers, or relays directly from its output.
Key Features
- Wide Supply Range – 4.5V to 16V operation
- Astable & Monostable Modes – Oscillator or one-shot pulse operation
- Adjustable Duty Cycle – Control on/off timing with external components
- 200mA Output – Source or sink current, TTL compatible
- Timing Range – Microseconds to hours
- 8-Pin DIP Package – Breadboard and perfboard friendly
Specifications
- Supply Voltage: 4.5–16V
- Output Current: 200mA source/sink
- Max Frequency: 100kHz
- Package: PDIP-8
- Manufacturer: Texas Instruments
Ideal For
- LED blinker and flasher circuits
- Tone and sound generation
- PWM and motor speed control
- Timing delays and pulse generation
- First-year electronics and STEM projects
Package Contents
- 1× 555 Timer IC (PDIP-8)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- duty cycle
- The fraction of time a signal or light source is switched on during a repeating cycle. On a proximity sensor, changing the duty cycle can affect detection range, response speed, accuracy and power use.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
Find this product in
Brands
Ne555
Datasheet · 1.5 MB · Click any page to view full size
555 Timer Datasheet
Datasheet · 1.7 MB · Click any page to view full size
Supplier page — sparkfun.com
Supplier Description · 294.8 KB · Click any page to view full size
Related Tutorials
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