For small Vds, the output transistors appear to be a resistor. An output that provides 3 mA at 0.2 volts will provide 6 mA at 0.4 volts and 12 mA at 0.8 volts. It's not perfectly linear, and becomes less slow with bigger Vds voltages.

From a measurement point of view, it really doesn't matter whether I force a current and measure a voltage or force a voltage and measure a current. V = IR.

I concede that the spec reads that you force a current and measure the voltage. On this part, that would result in a voltage of about 70 mV. That's getting hard to read with a production tester.

Most production test programs that I have seen force a voltage and measure the current. I've been doing it that way since I was a small child, and old habits are hard to break.

Also remember that the "ground" for the P-channel devices is actually Vdd. So Vdd is the true reference for the Ioh measurements.



I don't understand your point here. Please rephrase it.

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Would you mind if I turned the 4 NC pins into supplies? After all, you are talking about +200mA of sink current.