1. Home
  2. Electronic Components
  3. Datasheet for Signetic NE553?

Datasheet for Signetic NE553?

Anyone have anything on this old IC - from 1976? I can't find it in my regular Data books, IC Masters (oldest one I have is 1978), etc.

It appears to be an up/down counter of some sort, splitting the input clock generated by a 555 into two pulses - one slightly delayed relative to the other - used on a programming card for a test fixture (Kursh-Kasch video test fixture) for an early video game - Demolition Derby by Chicago Coin.

It is most definite that the part number is NE553 BA, I am not missing a digit. It is a 16pin DIP device. Power/gnd pins are 5 & 12...

Markings are:

S7604 NE553 BA

Thanks!

John :-#)#

--
    (Please post followups or tech inquiries to the newsgroup)
  John\'s Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
                     www.flippers.com
       "Old pinballers never die, they just flip out."
Reply to
John Robertson
Loading thread data ...

There's no NE553 in the 1974 Signetics databook. I don't have a later one.

I almost want to say it has something to do with servo motor control, but I don't know why that comes to mind, and certainly don't know that it applies to the 553.

Signetics did come out with the NE558, which was a quad timer, sort of like 4 555's in a package (but since there weren't enough pins, it couldn't do all that the 555 did). Make sure you aren't reading the "8" for a "3". You should be able to find the pinouts for the 558, and comparing it to the circuit might show a match.

Michael

Reply to
Michael Black

Just a thought but one of the things you can precisely do with the NE558 is generate delayed pulses relative to a trigger input, like a clock.

- James

--
------------------------------ 
 JrokLand http://www.jrok.com 
------------------------------
Reply to
jrok

I think you are correct - the NE558 does sound (and based on the PDF, looks) like the same item as what I have. Must be a bad imprint on the IC.

Thanks, it makes a lot more sense now!

John :-#)#

--
    (Please post followups or tech inquiries to the newsgroup)
  John\'s Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
  Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
                     www.flippers.com
       "Old pinballers never die, they just flip out."
Reply to
John Robertson

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.