Interactive chip reference
NE555 DIP-8 pinout
NE555 8-pin DIP-8 pinout. General-purpose timer IC — monostable, astable, and bistable modes
Pin reference
| Pin | Name | Function | Group |
|---|---|---|---|
| 1 | GND | Ground reference | ground |
| 2 | TRIG | Trigger — starts timing cycle | input |
| 3 | OUT | Output — switches between 0 and VCC | output |
| 4 | /RST | Reset — active low, halts output | control |
| 5 | CV | Control voltage — sets threshold | control |
| 6 | THR | Threshold — resets flip-flop | input |
| 7 | DIS | Discharge — open-collector transistor | output |
| 8 | VCC | Supply voltage (4.5V–15V) | power |
View the interactive NE555 package diagram and labeled pin details on WhichPin.