Gregory's Serverhere's an utterly ancient RCA CMOS logic chip. this TA5677W is the development number that shipped as the CD4033. looks like a 1971 date code.
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@brouhaha no i stumbled on this one in a magazine. https://www.worldradiohistory.com/Archive-Electronic-Design/1971/Electronic-Design-V19-N18-1971-0902.pdf pg 96  @tubetime What I have, from multiple sources: TA5939 CD4060? |
@tubetime Have you found any cross-reference of TA to production numbers? I only know of about half a dozen.