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NE555,SA555,SE555
PRECISION TIMERS
z Timing From Microseconds to Hours z Astable or Monostable Operation z Adjustable Duty Cycle z TTL-Compatible Output Can Sink or Source Up To 200 mA
Description/ordering information
These devices are precision timing circuits capable of producing accurate time delays or oscillation. In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. The threshold and trigger levels normally are two-thirds and one-third, respectively, of Vcc. These levels can be altered by use of the control-voltage terminal.
SA555 Datasheet
