Looking at the schematic of a SN754410 quad half bridge I was wondering about the varios types of off that a motor can have.
The motor could either have no power at all, putting it in 'Freewheel' mode or could have some other mode where both inputs are high or both low... not sure if there is a difference there.
Anyway, The function table on page one of the datasheet states that if the ENable pin is low the output is high-impedance (off).
Could anyone explain what this high-impedance means and the end result, as opposed to me setting the pins so that the two wires going to the motor are both Low for example.
The reason I am asking is I need to decide whether I will simply set the EN pins high with a pull up resistor or whether I will gain an advantage by actually having programatic controll over the EN pin.
Thanks for any advice/opinions.