Description:

The NTE955 series timing circuit is a highly stable controller capable of producing accurate time de lays, or oscillation. Additional terminals are provided for triggering or resetting if desired. In time delay mode of operation, the time is precisely controlled by one external resistor and capacitor. For astable operation as an oscillator, the free running frequency and the duty cycle are both accurately controlled with two external resistors and one capacitor. The circuit may be triggered and reset on falling wave forms, and the output structure can source or sink up to 200mA or drive TTL circuits.

Features:

Direct Replacement for 555 Timers


Timing from Microseconds through Hours


Operates in Both Astable and Monostable Modes


Adjustable Duty Cycle


High Current Output Can Source or Sink 200mA


Output and Supply TTL Compatible TTL


Temperature Stability of 0.005% per °C


Normally “ON” or Normally “OFF” Output


Available in Three Types:

  NTE955M – 8–Lead DIP

  NTE955S – 8–Lead SIP

  NTE955SM – SOIC–8 (Surface Mount)

Applications:


Precision Timing


Pulse Generation


Sequential Timing


Time Delay Generation


Pulse Width Modulation


Pulse Position Modulation


Linear Ramp Generator