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Altera_Forum's avatar
Altera_Forum
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15 years ago

Destruction of device on programming.

We have many times successfully programmed four MAX3000 devices powered from 3.3V in a series JTAG chain, using a buffer (74HC244) itself powered from 5V. This is using the USB Byte Blaster. We...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

5V is WAY above what the device will support, even for a short time.

I guess that the quad load on the original board dropped the voltage sufficiently to let the devices survive.