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LM556N LM556CN LM556 Dual Timer

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Texas Instruments
0.05 Ounces
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 Product Description

LM556 Dual Timer

General Description

The LM556 Dual timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. The 556 is a dual 555. Timing is provided by an external resistor and capacitor for each timing function. The two timers operate independently of each other sharing only V CC and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA.


  • Direct replacement for SE556/NE556 
  • Timing from microseconds through hours 
  • Operates in both astable and monostable modes 
  • Replaces two 555 timers n Adjustable duty cycle 
  • Output can source or sink 200mA 
  • Output and supply TTL compatible 
  • Temperature stability better than 0.005% per ̊C 
  • Normally on and normally off output


  • Precision timing 
  • Pulse generation 
  • Sequential timing 
  • Time delay generation 
  • Pulse width modulation 
  • Pulse position modulation
  • Linear ramp generato

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