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The dreaded level converters

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

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Altera_Forum
Honored Contributor II
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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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