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Altera_Forum
Honored Contributor
Honored ContributorVoltage converters
I'm doing a circuit with a Cyclone III, it expects inputs from comparators that are 5V powered. What is a cheap, low latency (less than 100ns at least) solution to shift that to 3.3V to keep the FPGA happy?
Baldur2 Replies
Altera_Forum100ns is rather slow. A resistive divider can do.
- Altera_Forum
You can use 5V-tolerant buffers, such as the 74lvc241 (http://www.standardics.nxp.com/products/lvc/datasheet/74lvc241a.pdf).
Having comparators with open collector outputs is also an alternative.
