8 Jun
2002
8 Jun
'02
3:31 p.m.
It's a 7-bit mux and refresh counter, and, if you ask me, it's a waste of
silicon. I used lots of 'em over the years and it isn't really that valuable.
If you have an application (one or two Intel Multibus-1 DRAM boards used 'em).
The 3242 is just a 7-bit mux and a 7-bit counter, with controls. It's useful
only if you specifically need it. I prefer to use normal muxes when I'm
reworking old troubled DRAM circuits.
If you really want the details, perhaps I can scan 'em for you. The 3242,
BTW, is not a MOT original, being an Intel/MMI design.
Dick
----- Original Message -----
From: "Ethan Dicks" <erd_6502(a)yahoo.com>
To: <cctalk(a)classiccmp.org>
Sent: Saturday, June 08, 2002 7:20 PM
Subject: Anyone have a data sheet on the MC3242?
I'm stripping interesting parts off of these stat mux boards
that I recently got around the corner - lots of socketed 6502s
and 65c02s, 2532s and the like. Many of the boards have a 24-pin
DIP MC3242 which I can find little about - Google only gives me
one meaningful hit that it's a "Motorola Mux and Refresh". I'm
trying to determine if it's worth desoldering any. I'm currently
using a hot-air desolderer, so it's not a _lot_ of effort, but,
for example, I'm not bothering to pull the popcorn TTL parts,
just memory and "interesting" parts.
So... anyone have any information on the MC3242 and why I might want
to save a couple dozen of them?
-ethan
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