CMOS 555 size...

[mongo]

  Sorry for my ignorance but I have a doubt...

  I'm putting the stuff together to build an UGLYFACE and when I asked for a CMOS555 at my local electronics store  they gave me these teeny tiney chips... about 30% of the size of a regular 555.didn't seem correct to me and I told the guy."this is the 555 cmos version!" he answered.
just to be sure I went to ANOTHER store and they showed me the same chips.

  So what about these? the cmos version of the 555 is SUPPOSED to be this small?? 

Andy

[shanter]

could it have been the surface mount version?

[mongo]

ah yes, just like this one:


  http://cgi.ebay.com/IC-Single-CMOS-TIMER-TS555IDT-TS-555-IDT-25_W0QQitemZ170031716133QQihZ007QQcategoryZ4663QQssPageNameZWD1VQQrdZ1QQcmdZViewItem

[ildar]

Yep, that's surface mount.
You need a DIP package chip, in which the CMOS 555 is certainly available.
If you can't find one at a store, Texas Instruments offers free samples and will send you one (or several).

[mongo]

thanks! now I feel stupid! 

Andy

[ildar]

Nah...no need to feel stupid...if you could only see some of my questions...   

It's always dangerous relying on some schmoe working for minimum wage in an electronics shop.

[oldrocker]

Yeah no need to feel stupid.  I listened to a guy at RS who told me the TLC555 chip was the same as the LM555 chip.  Even though I was lucky enough to get it to work in the UglyFace I later found that the TLC555 is CMOS and the LM isn't. (GET THE CMOS VERSION.)  Live and learn.
I love this pedal.  The free running oscillation is great.  I'm considering addling a foot controller for the oscillation knob.  Synthy.

[ildar]

I tried to do a perf version-note the use of the word "tried"-but I decided to do a pcb. Hopefully this one will work out-I've been telling my 5-year-old it's going to be a "Star Wars" pedal...hehehe