The NE558 Quad Timers are monolithic timing devices which can be

used to produce four independent timing functions. The NE558

output sinks current. These highly stable, general purpose

controllers can be used in a monostable mode to produce accurate

time delays—from microseconds to hours. In the time delay mode of

operation, the time is precisely controlled by one external resistor

and one capacitor. A stable operation can be achieved by using two

of the four timer sections.

The four timer sections in the NE558 are edge-triggered; therefore,

when connected in tandem for sequential timing applications, no

coupling capacitors are required. Output current capability of

100 mA is provided in both devices.


100 mA output current per section

Edge-triggered (no coupling capacitor)

Output independent of trigger conditions

Wide supply voltage range 4.5 V to 16 V

Timer intervals from microseconds to hours

Time period equals RC

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  • Product Code: NE558 QUAD TIMER - BE26
  • Availability: 13
  • R12.90