This is a common 555 timer/oscillator from TI. A classic for all of those first-year circuit projects where you need to blink an LED generate tone, and thousands of other great beginning projects. Google around for a huge list of resources and example projects.
- 1.5V to 12V 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 100mA