https://community.nxp.com/t5/Digital-Signal-Controllers/PCA9517-5V-Voltage-Tolerant/m-p/1246796#M2065 <P>Hi</P> <P>EN is pull up to VCCB internal of IC,you can feed VCCB/EN as 3.3V SDAB/SCLB pull up to VCCB,and SDAA/SCLA pull up to VCCA 5V.</P> <P>&nbsp;</P> Wed, 17 Mar 2021 03:03:29 GMT guoweisun 2021-03-17T03:03:29Z https://community.nxp.com/t5/Digital-Signal-Controllers/PCA9517-5V-Voltage-Tolerant/m-p/1246283#M2061 <P>I checked the datasheet for the PCA9517. It stated that the PCA9517 is 5V tolerant.&nbsp;</P><P>The PCA9517 is 5 V tolerant, so it does not require any additional circuitry to translate<BR />between 0.9 V to 5.5 V bus voltages and 2.7 V to 5.5 V bus voltages.</P><P>If I want to translate 3.3V to 5V I2C. Can I feed 5V to EN, VCCA and VCCB? instead of having two-level of voltages feed into VCCA and VCCB?</P><P>diagram attached for illustration.&nbsp;</P><P>Thank you.</P><P>Best regards,</P> Tue, 16 Mar 2021 08:58:04 GMT https://community.nxp.com/t5/Digital-Signal-Controllers/PCA9517-5V-Voltage-Tolerant/m-p/1246283#M2061 zulkifliaziz 2021-03-16T08:58:04Z https://community.nxp.com/t5/Digital-Signal-Controllers/PCA9517-5V-Voltage-Tolerant/m-p/1246796#M2065 <P>Hi</P> <P>EN is pull up to VCCB internal of IC,you can feed VCCB/EN as 3.3V SDAB/SCLB pull up to VCCB,and SDAA/SCLA pull up to VCCA 5V.</P> <P>&nbsp;</P> Wed, 17 Mar 2021 03:03:29 GMT https://community.nxp.com/t5/Digital-Signal-Controllers/PCA9517-5V-Voltage-Tolerant/m-p/1246796#M2065 guoweisun 2021-03-17T03:03:29Z