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Help - How can I translate 3.3V(SpartanII) to a 15V(CMOS)

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jonatan

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Does Anyone know how to translate the 3.3V output from SPARTAN IIE

(LVTTL) up to a 15V CMOS level, with current buffer together.



Is there an IC to do this work, such as 74AHCT24 (standard 5V CMOS buffer - 3.3 --> 5V), or circuit to provide this level shifting?

Thanks in advance
 

Re: Help - How can I translate 3.3V(SpartanII) to a 15V(CMOS

Hi,

is propagation delay of interest?? (building a circuit with multiple voltage shifters) ... or simply build an open-drain styled outputstage using e. g. FETs that is driven by your Spartan II)
Can you give us more information about your application??
regards,
Maddin
 

you can try a 74HCT07 buffer. the ic has a open collector output, so you can pull it up to 15V.

regards
revolt
 

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