I'm considering purchasing a L297 IC to drive my unipolar motor, but when I look at the datasheet here , I can't make any sense of it. I've been working with an L293D, which makes a lot of sense because it has the logic supply, the enable pin, the power, outputs matched with inputs, etc. However, when I looked at the diagram, I couldn't figure out where to place the 4 coil wires and the common wires, and how to hook it all up to my Raspberry Pi. Any help would be appreciated.
I'm considering purchasing a L297 IC to drive my unipolar motor, but when I look at the datasheet, I can't make any sense of it.
The first clue to what the L297 does is on page 1 of the data sheet: -
The L297 can be used with monolithic bridge drives such as the L298N or L293E, or with discrete transistors and darlingtons.
The second clue is the picture below: -
Notice how it interfaces to the motors via the fairly crappy L298.
If you are intent on using it may I draw your attention to this Q&A. It might contain useful information should you be thinking of using the L298 driver.