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External Clock level DSP56374

Started by asgr...@xs4all.nl August 14, 2013
Hello All,

I'm trying to find out if the DSP56374 is "5 Volt" tolerant on the input EXtal pin. The DSP56371 is according to the UG - but I'm not sure if the DSP56374 is as I'd like to use an external XO. All other inputs are 5V tolerant - but I can't find anything on the clock. Does anybody know?

brgrds,

Paul
Hello Paul,

According to DSP56374's datasheet, EXTAL is not 5V tolerant (see page 6, table 3, note 1 and page 7, table 7), however it would be simple to adapt voltage levels with a two resistor voltage divider.

Regards,
Pablo
Hello All,
>
>I'm trying to find out if the DSP56374 is "5 Volt" tolerant on the input EXtal pin. The DSP56371 is according to the UG - but I'm not sure if the DSP56374 is as I'd like to use an external XO. All other inputs are 5V tolerant - but I can't find anything on the clock. Does anybody know?
>
>brgrds,
>
>Paul