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555 Timer Specification Question

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zipfactor

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Hey all,

I have a general question about the 555 timer. I am looking at the datasheet and the supply voltage says 5V to 16V range. Is this AC or DC power? I does not really state whether it is AC or DC. Thanks for your help.
 

it is DC voltage. provide 5V to 16V DC voltage to the Vcc

and your output will have around 5V++ to 16V-- depend on your supply voltage~

For more information: Google : Astable 555 timer etc there is a lot of article around the web~
 

Thank you for the reply. When I look at the datasheet though, say for a LM555, it does not state 4.5V to 16V DC, it just says 4.5V to 16V. In general with datasheets, if it does not specify AC or DC, we just assume DC? Thanks again for the replies, I know this is probably a trivial question for most on here.
 

zipfactor said:
Thank you for the reply. When I look at the datasheet though, say for a LM555, it does not state 4.5V to 16V DC, it just says 4.5V to 16V. In general with datasheets, if it does not specify AC or DC, we just assume DC? Thanks again for the replies, I know this is probably a trivial question for most on here.
Click to expand...

supply voltage usually DC for IC/chip . U can assume generally is DC if doesn't state AC/DC. (I am not sure is there any exclusion cases, but I never meet yet :) )
 

zipfactor said:
When I look at the datasheet though, say for a LM555, it does not state 4.5V to 16V DC, it just says 4.5V to 16V.
Click to expand...

My datasheet for the LM555 does say DC voltage in numerous places. For example here:

54_1311844718.png


There is even a footnote that says voltages are DC unless otherwise specified and images with "+Vcc." Taken together, I don't see any ambiguity.

John
 

I thought Vcc referred to collector power supply? Or does it refer to DC voltage in some way. I know some datasheets actually say "Vdc" or the like.
 

There is a Vcc power supply pin (#8) for the 555 and the note above refers to the voltage applied as power supply to that pin, the listed parameters are given with a power supply in the range of +5 to +15v

Alex
 

Ok thanks everyone, I just wanted to make sure I understand this. I see the note you are referring to about the DC and AC electrical characteristics. So if it is only 5V that is DC, and if it is AC they would indicate 5Vac or something similar. Thanks again all.
 

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