R1 * Ohms (Ω)

R2 * Ohms (Ω)

C * Farads (F)

R1=1k, R2=1k, C=1µF R1=1k, R2=10k, C=100nF R1=10k, R2=10k, C=10nF

— Hz

Frequency and duty cycle

Astable

Output Time

R * Ohms (Ω)

C * Farads (F)

R=10kΩ, C=10µF → 0.11s pulse R=100kΩ, C=1µF → 0.11s pulse R=1kΩ, C=100µF → 0.11s pulse

— s

Pulse width (one-shot time)

Monostable

Trigger Output

R (Pull-up) * Ohms (Ω)

VCC * Volts (V)

R=10kΩ, VCC=5V R=4.7kΩ, VCC=12V

— V

Output voltage levels

Bistable

Pin 2 (Trigger) → Sets output HIGH Pin 6 (Threshold) → Sets output LOW Pin 4 (Reset) → Resets output LOW (active low)