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P82B715 I2C Bus Extender Heats or Not (SOIC package)

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ogulcan123

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Hi,

I'm using P82B715 in order to extend my sensor cable lenght if needed.

Here is my setup (same as datasheet):

p83b715-test.png

I'm using the DIP packege in input and SOIC package at output since my board at the output is 3x3cm very small PCB.

The problem is that the sensors in the output board are temperature sensors and I couldn't figure out how much a SOIC packaged P82B715 might heat in a system that works 24/7.

I appreciate if anyone help me checking the following datasheets for how much the IC actually heats.

https://www.ti.com/lit/ds/symlink/p82b715.pdf
https://www.nxp.com/docs/en/data-sheet/P82B715.pdf

I can answer any futher details if needed.

Regards,
Ogulcan
 

Table 6.4 gives you all the thermal information you need. You need to figure how much power the device will dissipate, based on the other parameters from table 6.5 and your load.
 

If this is one directional on/off signaling, I don't see the purpose of using I2C extenders.
 

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