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 LEDgenerate toneand thousands of other great beginning projects. Google around for a huge list of resources and example projects.
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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
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