Need Help!- motor control chips

[nishantpol]

I am designing my own electronics for use with DC motors and encoders for a CNC router. I bought a tle 5205 (Infineon, Jameco 1627518) and hooked it up to a PSU, using a breadboard as the medium and a voltmeter between the two outputs. However, regardless of the input pin states, the voltmeter always read the same. In fact, when I hooked up the voltmeter to the inputs and compared them with ground, it read 3V. All the other parts in my electrical design work fine. Can anyone suggest a solution to this problem or offer a better chip that will drive a 12V motor using step and direction signals?
Thanks,
Nishant

[MarshaJ847]

My first guess would be that the Open Load detection circuit is operating, i.e. the meter isn't providing the load of a real motor so the circuit is protecting the chip.

[nishantpol]

This time, I soldered all the wires directly to the chip and used a motor between the outputs. I had the input lines free floating before (not attached to the PSU 5V line nor ground. When I connected the inputs to ground, (the chip control is active low) the motor whirred about.
Thanks so much.
Nishant