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LM555, NA555, NE555, SA555, SE555 (DIP)

Single precision timer.

Datasheet

Left Pins

Pin Name Function(s)
1 GND Ground
2 TRIGGER
3 OUTPUT
4 RESET

Right Pins

Pin Name Function(s)
8 Vcc Positive supply voltage
7 DISCHARGE
6 THRESHOLD
5 CONTROL VOLTAGE