Active low- high

Replies

• 

  Jeffrey Arulraj

  Where in Digital pulses ?
  
  Then High refers to 5V and Low to 0V
  
  That also depends on the devices we use in the configuration
  
  Active high in general refers to the triggering Voltage level of the device and Active Low is the voltage at which the device turns off
• 

  prashanth463

  active high is the voltage where the circuit switches on and all the voltages lower than that voltage is considered as active low(where the device does not turn on)
• 

  [Prototype]

  Active high of any circuit means the circuit will get activated only when there is high signal (this is the normal, straight operation). Active low is opposite i.e. the circuits which are active low will get activated when you supply low signal.
  
  Eg. of active low mechanism is reset signal. The reset signals are generally active low. Under normal condition, you apply logic 1 to reset signal & when you wish to reset you supply 0. This is done to avoid false reset in case if its kept active high.
• 

  pikachu1994

  [Prototype]

  Active high of any circuit means the circuit will get activated only when there is high signal (this is the normal, straight operation). Active low is opposite i.e. the circuits which are active low will get activated when you supply low signal.
  
  Eg. of active low mechanism is reset signal. The reset signals are generally active low. Under normal condition, you apply logic 1 to reset signal & when you wish to reset you supply 0. This is done to avoid false reset in case if its kept active high.

  This is exactly what i want thanks