The good ol’ classic 555 precision timer. Designed more than 40 years ago, this IC is still massively used and a lot of projects and resources can be found online.

It can be use as a simple timer, pulse generation, as an oscillator and more.

TI part number: NE555P

Features

• Supply voltage: 4.5V-16V
• Timing from microseconds to hours
• Astable or monostable operation
• Adjustable duty cycle
• TTL-compatible output can sink up to 200 mA

Applications

• Pulse-shaping circuits
• Missing-pulse detectors
• Tone-burst generators
• Pulse-width modulators
• Pulse-position modulators
• Sequential timers
• Pulse generators
• Frequency dividers
• Application timers
• Industrial controls
• Touch-tone encoders

Documents

• NE555 datasheet