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Hi,
I see the TLV9021-Q1 is a new device. What's the differences between TLV9021-Q1 and TLV9001-Q1?
Can the TLV9021-Q1 replace TLV9001-Q1 in below schematic?
The TLV9001-Q1 is an amplifier; the TLV9021-Q1 is a comparator with an open-drain output.
This schematic uses U2 as a comparator, and has a pull-up at the output, so you can indeed use the TLV9021-Q1.