74xx orgin

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Tue May 15 19:40:44 2001

From: Hans Franke <Hans.Franke_at_mch20.sbs.de>
>
>Maybe I should specify my question ... I need to know
>at what date these chips where at first available -
>not just the era. A good single IC to use could be the
>74181 ALU.


Around 71. Then the H, S, LS, ALS and F parts.

>> I have a 74 TTL design guide at home, so I'll check it too.
>
>The oldest datasheet I could find says Dec 1972 for the 74S181


Sounds close to right. The S however was later the basic 74181
was first. Infact the July 1972 issue of Ham Radio Has a supplier
selling the 74181 for $4.50!!

Allison
Received on Tue May 15 2001 - 19:40:44 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:34:08 BST