I use a board where the designers uses a SN75451 chip. It is a dual AND gate chip with open collector output.
I am quite surprised as normally the 74xx09 would be used in order to implement AND gate with open collector output. Why in the world would we want to use a different chip?
It seems like LEDs can be lit directly from the chip so is it simply because it can drive a lot of current ? If so, why use this chips instead of a discrete transistor ?