User's Manual

GE865 Hardware User Guide
1vv0300799 Rev.11 – 13-07-2010
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An example of level translation circuitry of this kind is:
The example is done with a SIPEX SP3282EB RS232 Transceiver that could accept
supply voltages lower than 3V DC.
NOTE:
In this case Vin has to be set with a value compatible with the logic levels of the
module. (Max 2.9V DC). In this configuration the SP3282EB will adhere to EIA/TIA-562
voltage levels instead of RS232 (-5 ~ +5V).