Got handed a schematic a couple of days ago with the SN754410, which TI bills as "an improved version of the L293".
One of the outstanding* features of the L293 is that it is dog slow. The SN754410, on the other hand, has delay times that indicate that it could be operated in the tens of kHz, with pulse times down to one or two microseconds.
Am I reading that data sheet right? Or do I have my head up my assumptions? This is for a motor control circuit that would work a lot better if we could PWM it fast enough for the motor to do smoothing, and that calls for a PWM rate that approaches 100kHz. It's for a really little motor, so having some super-zoot circuit with gate drivers and a bunch of discrete transistors would be kinda overkill -- and I'm really supposed to just be the control guy.
- I didn't say outstandingly good.