Integrated Circuits

555
Timer
PDF datasheet
       
GND 1  • 8 Vcc
TRIG 2 7 DIS
OUT 3 6 THR
RESET 4 5 CV
       
Pin Symbol Description
1 GND ground
2 TRIG trigger
3 OUT output
4 RESET reset (active low)
5 CV control voltage
6 THR threshold
7 DIS discharge
8 Vcc supply voltage


Specifications
(typical values under recommended operating conditions, unless specified)
Parameter Value Unit
Maximum supply voltage 18 V
Maximum output current (NE555) 200 mA
Power dissipation 600 mW

Notes
  • In monostable mode, pulse width ≈1.1RC
  • In astable mode, frequency = 1/(0.693*C*(R1+2*R2))
  • In astable mode, pulse high time = 0.693*(R1+R2)*C
  • In astable mode, pulse low time = 0.693*R2*C

Note
Data is maintained by an independent source and accuracy is not guaranteed. Check with the manufacturer's datasheet for up-to-date information.

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