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Altera_Forum's avatar
Altera_Forum
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19 years ago

5.0V Devices ?

Hi, I'm trying to drive a 5-volt device , ie CD-Rom drive, with my Cyclone board and was wondering if it's possible at all? Or does Cyclone only suppport 3.3V at its output pins. Would it work ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

You can use bidirectional level translators or FET switches to protect the cyclone device from 5V supply. By using +3.3V LVTTL or LVCMOS standard, you can meet the minimum input requirements (VIH) of +5V standard (which is usually around 2.4V). By using level translator or FET switch, you can protect cyclone device against pure +5V output from your target device.

Hope this will help.

Regards,

BD