555 Timer
Official
Analog
·
Generic — 555
·
Curated by CircuitSim
·
Used in 14 public circuits
Details
Manufacturer
Generic
Part number
555
Pins
8
Used in
14 circuits
Added
May 2026
About this component
Generic 8-pin 555 timer with supply-relative comparator thresholds, a stateful latch, and finite output and discharge resistance for timing and pulse circuits.
Pins
Pins
8 pins
NumberNameDescription
1
GND
Ground and negative supply reference.
2
TRIG
Trigger input that sets the timer latch.
3
OUT
Timer output.
4
RESET
Active-low reset input; hold high for normal operation.
5
CTRL
Control-voltage input for the internal threshold reference.
6
THRESH
Threshold input that resets the timer latch.
7
DISCH
Discharge-transistor node for the timing network.
8
VCC
Positive supply input.
Public circuits using this component
14 total
Circuits
4 circuits
Circuit nameCreated byLast updated
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