Alt-BEAM Archive
Message #10055
To: beam beam@sgiblab.sgi.com
From: Ben Hitchcock ben@wollongong.apana.org.au
Date: Friday, 11 February 2000 2:57
Subject: 74x240 question
>All,
>
>I have been experimenting with a 74HC240, and I can't get the chip to drive
>a pager motor directly even with three outputs ganged together.
>
>I've seen this done with 74AC240, I was just wondering if anyone had done
>this with a 74HC240 at all?
>
>I like HC because of the low current consumption (I'm making a photovore).
>How does the current consumption of AC compare to HC? I guess I'll have to
>use driver transistors anyway, because Dick Smith doesn't stock any AC
>chips.
>
>I noticed in wilf's 240 uCore schematic that he used HC, which is why I
>thought that I might be able to use pager motors with two outputs ganged up
>together.
>
>Any ideas?
>
>thanks,
>Ben
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