555 Timer

This is a common 555 timer/oscillator from TI. A classic for all of those first year circuits projects where you need to blink an LED, generate tone, and thousands of other great beginning projects. [Google around](http://www.google.com/#hl=en&q=555+timer+circuits&aq=f&oq=&aqi=g10&fp=-JGT4tlCrJA) for a huge list of resources and example projects.

**Features:**

* 4.5V to 16V supply
* 8-pin DIP package
* Timing from microseconds to hours
* Astable or monostable operation
* Adjustable duty cycle
* TTL compatible output
* Sink or source up to 200mA

**Documents:**

* [Datasheet](https://cdn.sparkfun.com/assets/8/3/b/7/1/DS-16473-555_Timer.pdf)