The dreaded level converters

Question

With IO voltages even lower than the attached controller one has to interface the FPGA with a level converter. Our local altera distributors support suggested the FST3245, an 8 bit parallel analog switch. The last time I looked, it had an MOQ of 2500 pieces at 0.169 USD, being just 420 USD, at digikey. I fear it just takes me too long to use them all, also considering that there are new FPGA families coming out every year. Is there an alternate solution to interface to a 3.3V controller ? Or is there a small guarantee that these analog switches will serve the purpose for some time to come ?

Rene

altera_forum · Answer

Other than looking around for other sources, you could try other switches.  There are bus drivers, and switches likt the IDT QS3VH125 / QS3125.

altera_forum · Answer

Dear M. Tschaggelar

you can use the FST3245MTC - EBV has them on stock also for small quant.

http://www.fairchildsemi.com/ds/fs/fst3245.pdf

Or the ultimative solution:

ST2378ETTR

http://www.st.com/stonline/products/literature/ds/9489/st2378e.pdf

also from EBV.

regards

Daniel

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The dreaded level converters

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