Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

MAX II(EPM570) drive output

Hello, My question is what is the maximum driver current of EPM570 device? On our boards, we use EPM570 as an alternative of 74LCX16245/244 to buffer CPU data/address bus and drives device...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

FvM is absolutly right.

You should measure your signal with a fast scope and correct setup (no GND clip thats a 1 wire loop antenna).

have a look at the over and undershots of your signal. especially the undershots. they shift the gnd level down and some latches will get false levels for 1 and 0 recognition.

with the current strength assignment you can adjust the over and undershots.