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


  • 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


  • 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


Additional information

Weight 0.010 kg
Dimensions 8.75 × 6.20 × 1.75 mm



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556 Dual Precision Timers

556 precision timer. Texas Instruments NE556N.


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