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Article #16639

High-speed max. Parallel cable length???

#16639
From: Jeremy Thomas McDonald
Date: Thu, 07 Jan 1993 22:16
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I am using a 74HCT244 bus driver and 74LS377 octal D-latch to transmit
roughly 1MB/second across a DIN-25 Parallel cable.  Is there a maximum
length allowed to get this transfer rate?  The computer is receiving
data and sending a few control signals back to the device (like the
!DRDY line is pulsed back to the device after every byte is fetched).
I am thinking about using a 3 foot cable.  Is this too long?  Should
I be terminating the data lines with capacitors on the device end?
I don't know anything about analog stuff, just want the digital to work.
(I know... welcome to the real world...)
Please e-mail me:

jeremym@fraser.sfu.ca - yes a lowly computer science student.
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From: jeremym@fraser.sfu.ca (Jeremy Thomas McDonald)
Subject: High-speed max. Parallel cable length???
Message-ID: <jeremym.726445019@sfu.ca>
Sender: news@sfu.ca
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Thu, 7 Jan 1993 22:16:59 GMT
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