I am using ADM2482, Isolated RS-485 Transceivers. I need to calculate total max power needed to Drive this circuit.
Specs are 1. Logic side voltage is 5V 2. bus side voltage is 3.3V 3. Speed 1 Mbps. 4. RS 485
SO what will be my total power needed to drive this circuits.
= 5V*6mA+3.3V*50mA=195mW ( total power) only ???
what about the short circuit current shown in attached pics, do I also need to consider this current , if yes that which side Logic side or bus side.
if logic side
=5V*6mA+3.3V*50mA + 5v*250mA=1.4W ( total power)
if bus side =5V*6mA+3.3V*50mA + 3.3v*250mA=1.02W ( total power)
Does RS485 need this much power (1W/1.4W) to operate ??