Classic 556 dual precision timers. The NE556 contains two NE555 in a single package. Designed more than 40 years ago, the NE555 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: NE556N

Features

• Supply voltage: 4.5V-16V
• Precision timers from microseconds to hours
• Two precision timing circuits per package
• Astable or monostable operation
• TTL-compatible output can sink or source up to 150 mA
• Active pullup or pulldown
• Designed to be interchangeable with Signetics NE556, SA556, and SE556

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

• NE556 datasheet