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SC18IM700 RX and TX pins - TTL or not?

Question asked by Zack Johnson on Aug 4, 2016
Latest reply on Aug 5, 2016 by Tomas Vaverka

Hello,

I am thinking about using the SC18IM700 for RS-232 to I2C conversion. My question is about the RX and TX pins on this chip. Are these real RS-232 signals that go from -5V to +5V or are they TTL serial signals that only go from 0V to +5V? I could not find any information about this on the data sheet.

 

Also, if they do go from -5V to +5V, are these values generated internally from the 2.3V-3.6V power supply used to operate the chip?

 

Thanks.

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