74xx orgin

From: John Honniball <John.Honniball_at_uwe.ac.uk>
Date: Tue May 15 08:42:37 2001

On Tue, 15 May 2001 13:45:06 +0200 Hans Franke
<Hans.Franke_at_mch20.sbs.de> wrote:
> When where the first 74xx ICs released / designed ?

Late 1960s/Early 1970s, I think.

> Especialy when where complex chips like 744x, 748x or
> 74181 first mentioned/available ?

Probably early 1970s.

The story I've heard is that Texas Instruments wanted to
build a computer for oilfield instrumentation (hence the
name of the company). They built it by first designing a
range of SSI (Small-Scale Integration) gates as TTL chips,
then building the system with them. The chips were sold as
the 7400, 7401, and so on, and the rest is history!

I have a 74 TTL design guide at home, so I'll check it too.

--
John Honniball
Email: John.Honniball_at_uwe.ac.uk
University of the West of England
Received on Tue May 15 2001 - 08:42:37 BST

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