topic Re: PCA9617　Distance: 10m in Power Management https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030990#M4100 <P>The typical blue Cat5e communication cable is about 46 pF/m</P> <P>Your usage 10m&nbsp;capacitance + PCA9617 Cio should be less 4000pF,if low speed should be OK.</P> <P>---</P> <P>2 channel, bidirectional buffer isolates capacitance and allows 540 pF on either side of <BR />the device at 1 MHz and up to 4000 pF at lower speeds</P> <P>---</P> <P>&nbsp;</P> <P>&nbsp;</P> <P>Thanks!</P> Tue, 21 Jan 2025 02:29:31 GMT guoweisun 2025-01-21T02:29:31Z PCA9617　Distance: 10m https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030934#M4095 <P>I'm thinking of using two PCA9617A, with a master-slave distance of 10m. Is this ok according to the specs?<BR />One PCA9617 will be connected directly to the master board, and the other one will be placed very close to the slave board.</P> Tue, 21 Jan 2025 01:01:50 GMT https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030934#M4095 yuji0935 2025-01-21T01:01:50Z Re: PCA9617　Distance: 10m https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030974#M4097 <P>HI&nbsp;<SPAN>yuji0935</SPAN></P> <P>For the high speed 10m I recommend the differential I2C-bus buffer&nbsp; PCA9614/9615</P> Tue, 21 Jan 2025 02:11:31 GMT https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030974#M4097 guoweisun 2025-01-21T02:11:31Z Re: PCA9617　Distance: 10m https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030977#M4098 Thank you for recommending PCA9614/9615 for high speed. However, this time I'm limiting the communication speed to 100kHz. In that case, can I use PCA9617? Tue, 21 Jan 2025 02:15:48 GMT https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030977#M4098 yuji0935 2025-01-21T02:15:48Z Re: PCA9617　Distance: 10m https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030990#M4100 <P>The typical blue Cat5e communication cable is about 46 pF/m</P> <P>Your usage 10m&nbsp;capacitance + PCA9617 Cio should be less 4000pF,if low speed should be OK.</P> <P>---</P> <P>2 channel, bidirectional buffer isolates capacitance and allows 540 pF on either side of <BR />the device at 1 MHz and up to 4000 pF at lower speeds</P> <P>---</P> <P>&nbsp;</P> <P>&nbsp;</P> <P>Thanks!</P> Tue, 21 Jan 2025 02:29:31 GMT https://community.nxp.com/t5/Power-Management/PCA9617-Distance-10m/m-p/2030990#M4100 guoweisun 2025-01-21T02:29:31Z