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Altera_Forum
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16 years ago

MAX3000 CPLD bi-directional I/O with 5V pull-up

Hi How would I create a bi-directional pin with open-collector output on a MAX3000 CPLD? I have started the design with an open collector driver driving the pin and a 541 type buffer fo...
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Altera_Forum
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16 years ago

I assume you're referring to MAX3000A devices? You're doing it correctly. Though I'm not sure what you mean by 541 type buffer on the input (I assume you're referring to a 74xx541 part). Info is found on pages 20 & 21 of the datasheet:

http://www.altera.com/literature/ds/m3000a.pdf

Jake