Thread: Good old 7407
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Oppie[_3_] Oppie[_3_] is offline
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Default Good old 7407


"Herman" wrote in message
...


I have 300 of the ULN2803 if it will help you!


Thanks for the offer but not necessary at present. ULN2803 is still offered
in DIP and SOIC by TI and Toshiba.

The Old UDN2595 from Allegro (Sprague) was nice to work with since it was a
Non-inverting driver with a PNP input. Interfaced nicely to 8051 type (quasi
bi-directional) ports for a glitchless power-up. Toshiba has similar parts
but dealing with them over anything but the most common of parts can be a
nightmare. I got a notice of discontinuation on one part with no
replacement. Seems that they migrated production from a 3" wafer fab to a 5"
fab. The replacement part was the same number but with a (5) suffix! DUH -
who ever heard of making the wafer fab part of a spec code? Should be
transparent to the user. Then there is RoHS...
OK, I feel better now grin.