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Curious Inventor - Store: 555 Timer IC
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in stock - price: $0.34
555 Timer IC
555

short description:

One of oldest and most versatile chips out there, this simple timer can control timing (square waves, pulse extenders, missing pulse detectors, ad infinitum...) from hours to microseconds.

more information and instructions:

8 pin DIP package (bread board ready). The output pin can sink or source up to 200mA. ST NE555 spec sheet

Input Voltage: 4.5 to 16V