Full part number is DRV5033AJQLPGM (purchased from Digi-Key).
Purchased 100 units. First 4 act the same with 100nF supply bypass and a 10k pullup; output pulls down normally (~67mV) but 'off' voltage only goes to ~670mV regardless of supply voltage.
Voltages tested ranged from 3-10VDC with output not pulling up as it should.
Why would the output be limited to about a diode-drop?