The maximum current that each driver can handle is 1A, but it's recommended to limit it to 500mA for reliable operation.
Yes, the SN75480N can be used to drive inductive loads, but you need to add a freewheeling diode across the load to protect the driver from back-EMF.
The input voltage (VCC) should be between 4.5V and 5.5V for reliable operation. If your system voltage is higher, you can use a voltage regulator to step it down.
The enable (G) input is used to enable or disable all four drivers simultaneously. When G is low, all drivers are disabled, and when G is high, all drivers are enabled.
Yes, the SN75480N can be used to drive LEDs, but you need to add a current-limiting resistor in series with the LED to prevent overcurrent.