Author Topic: 555 and 556 timers  (Read 3476 times)

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Offline TravelingPencilTopic starter

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555 and 556 timers
« on: April 29, 2007, 12:01:36 PM »
I was wondering if there is a difference between the 555 timers and the 556 timer on these pages and weather or not they will function like normal a normal timer IC

http://www.allelectronics.com/cgi-bin/category.cgi?type=store&category=285&orderby=INVENTORY%2Estore%5Fquantity%2CORGANIZATION%2Ecategory%2CINVENTORY%2Ebrand%2CINVENTORY%2Emodel&start=0

Offline zamboniman60

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Re: 555 and 556 timers
« Reply #1 on: April 29, 2007, 02:04:31 PM »
ah yes, allelectronics... my favorite supplier...
anyway, the 556 timer is a pair of 555s in one case, with a shared set of +Vcc and Gnd pins. You can use only one of the 555 timers in the 556, but it's a bit of a waste to buy it if you only need one timer.

Offline ed1380

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Re: 555 and 556 timers
« Reply #2 on: April 29, 2007, 02:35:09 PM »
at digikey I paid the same for regular 555's, so not much of a waste of money
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Offline TravelingPencilTopic starter

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Re: 555 and 556 timers
« Reply #3 on: April 29, 2007, 03:45:41 PM »
thanks for the help, now i can get started on my sooper secret project ;D

Offline Hal9000

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Re: 555 and 556 timers
« Reply #4 on: April 29, 2007, 04:29:45 PM »
thanks for the help, now i can get started on my sooper secret project ;D

At this point you are allowed to tell us. Plz.
"The truth is, you can't hide from the truth, cos the truth is all there is" - Handsome Boy Modeling School

Offline ed1380

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Re: 555 and 556 timers
« Reply #5 on: April 29, 2007, 08:08:17 PM »
sooper secret. psshh it's probably something stupid and that's why he doesn't want to tell us ;)




[whisper=ed1380]I hope this reverse psychology works[/whisper]
Problems making the $50 robot circuit board?
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Offline TravelingPencilTopic starter

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Re: 555 and 556 timers
« Reply #6 on: April 29, 2007, 08:31:39 PM »
 >:(

Offline TravelingPencilTopic starter

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Re: 555 and 556 timers
« Reply #7 on: April 29, 2007, 08:38:04 PM »
well ok, but just because i told you duzint mean the revrse psycology worked!! It is for a PWM circuit

Offline Hal9000

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Re: 555 and 556 timers
« Reply #8 on: April 30, 2007, 02:48:25 AM »
sooper secret. psshh it's probably something stupid and that's why he doesn't want to tell us ;)




[whisper=ed1380]I hope this reverse psychology works[/whisper]

Lol what a meanie!

PWM rocks.
"The truth is, you can't hide from the truth, cos the truth is all there is" - Handsome Boy Modeling School

Offline TravelingPencilTopic starter

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Re: 555 and 556 timers
« Reply #9 on: April 30, 2007, 05:42:38 PM »
heck yes it rocks!!!

 


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