> The board it's for kids, and to make at home. So, can't be SMD. And if i use
> the discrete transistors i will need 16 of them.

You said "Like ...2803" - which is 'open collector - effectively it's
an array of darlingtom transistors plus diodes.

Also, in many applications you only want 'open collector' drive -
including some of those that yoi\u mentioned.
ie 8 transistors will do what you want in some cases and 16 may not :-).

An IC takes 2 pins / channel. A transistor takes 3. Soldering TO92's
is not hard, cost is low and education may happen. Space required is
about the same as for a ULN2803 (or can be).

TO92 transistors cost a few cents in the right place in modest volume.
 I tend to y\use BC337/BC327 at about 500 mA and with 300+ beta
(current gain) versions available. BUT each have their own favourites.


             Russell
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