Older TI
um..., Hi
Posts: 64
hey,
i have been wanting to hack this old TI-35 i have laying around (released in 1979) but i cannot find and info on the CD4557NL, exept that it replaced or had something to do with the TP0456A. i have found this site that could prove to be usefull, www.datamath.org/IC_List.htm#Enhanced%20C-MOS.
Thanx a bundle,
MM
i have been wanting to hack this old TI-35 i have laying around (released in 1979) but i cannot find and info on the CD4557NL, exept that it replaced or had something to do with the TP0456A. i have found this site that could prove to be usefull, www.datamath.org/IC_List.htm#Enhanced%20C-MOS.
Thanx a bundle,
MM
Comments
Well, anyway, I believe the IC in question is --
http://rocky.digikey.com/WebLib/On-Semi/Web%20Data/MC14557B-D.pdf