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Altera_Forum
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19 years ago

explaination of table 3 of appnote 447

I dont understand table 3 of appnote 447. The 3.3v row and 3.3v TTL column... The table says that if the driver is capable of 30mA or less at Voh of 2.4v then all is good. How does this relate back...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Justin,

Could you please explain how the max. current (for example 30mA) at V0H=2.4V relates to the VI max spec? I don't understand how the max. current figures were obtained.

Thanks.

--jmv