Message 11/4573  From Ahmed Abdel-Shakour           Nov 21, 01 10:54:48 PM -0500


Date: Wed, 21 Nov 2001 22:54:48 -0500
X-Accept-Language: en,fr-CA
To: mann@eecg.toronto.edu
Subject: ECE385 driving two VGAs

Hello Sir,

Here is a description of how we built the chip to drive two VGAs from
one video card. First we found the equivalents to ECG2322. They are:
FT5714M        MPQ3798        MPQ3906        MPQ2907
NTE2322         TPQ2907
They are Quad general purpose transisitors. Here is a link to the data
sheet for MPQ3906 in proprietary document format:
www.americanmicrosemi.com/newproducts/transistorarrays/pdf/ mpq3906.pdf
Also, you can find equivalences for chips at : www.chipdir.org as well
as at
http://matthieu.benoit.free.fr/cross/

Aside note: We think the resistors (100 ohm) are two low, it might be a
good
idea to use a (350 ohm) or more to avoid overheating of the circuit.


Ahmed