555 Timer (NE555)

The popular 555 from TI is an easy-to-use timer/oscillator with a friendly price tag.

These devices are precision timing circuits capable of producing accurate time delays or oscillation.

In the time-delay or mono-stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a-stable mode of operation, the frequency and duty cycle can be controlled, independently with two external resistors and a single external capacitor.

Specifications

• Timing from microseconds to hours
  
• Astable or monostable operation
  
• Adjustable duty cycle
  
• TTL compatible output
  
• Sink or source up to 200mA
  
• Supply Voltage: Vcc, 4.5-16V
  
• Max Output Current: ±200mA, ±250mA Max
  
• Package: 8-pin PDIP
  
• Dimensions (excluding pins)
  
  • Length: 9.33mm (0.37")
    
  • Width: 6mm (0.24")
    
  • Height: 3.34mm (0.13")

Resources

• NE555 Datasheet

Pinout