Anyone familiar with the SN754410

http://www.sparkfun.com/datasheets/IC/SN754410.pdf

I'm not good at deciphering datasheets, but it seems like this chip has diodes in it that would work for kickback filters on my little Sparkfun gearmotor. The diagram on page 2, where it says, "typical of all outputs". --wouldn't those 2 diodes on the right work as kickback diodes? I'm trying to work kickback diodes into my pc board, but it would be SO much easier if I didn't have to... thanks

SouthernAtHeart: http://www.sparkfun.com/datasheets/IC/SN754410.pdf

I'm not good at deciphering datasheets, but it seems like this chip has diodes in it that would work for kickback filters on my little Sparkfun gearmotor. The diagram on page 2, where it says, "typical of all outputs". --wouldn't those 2 diodes on the right work as kickback diodes? I'm trying to work kickback diodes into my pc board, but it would be SO much easier if I didn't have to... thanks

Electrically they are however the example application the datasheet shown in figure 3 of page 6, shows external protection diodes being used. So perhaps the internal diodes don't have a high enough current rating and it's best to also have external diodes. Belts and suspenders perhaps?

Lefty

hmmm. That's not the answer I hoped for! :roll_eyes: I reckon I'll work in some extras...

The diodes build in are for ESD protection, you need external diodes with the SN754410 if you do not want the risk to fry the chip / arduino. And yes there are people out there which have succesfully run without them for a longer time.