This question is being posted for an FAE:
For TLC339, I have a question:
If the VDD is powered by 5V and we have got a pullup resistor on the comparator output pin that is pulled up to 3.3V. Is that OK? Does the pullup have to be tied to 5V? The data sheet just show a simple N channel MOSFET w/open drain for the output stage but does the drain pin actually tie back to some internal circuitry?
Let me know.
Yes, the TLC339 output MOSFET drain pull-up may be connected to a voltage level equal to or less than the device supply voltage. Therefore, if the device is powered by a 5V supply, the output pull-up can be safely connected to a 3.3V supply.
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