User's Manual

GL865 Hardware User Guide
1vv0300910 Rev.1 – 2011-07-22
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved
page 45 of 79
An example of level translation circuitry of this kind is:
The example is done with a MAXIM MAX3237 Transceiver that could
accept supply voltages of 3V DC. Not exceeded with supply voltage
higher then 3.1VDC because this is the higher voltage limit of
module’s inputs.
NOTE:
In this case Vin has to be set with a value compatible with the
logic levels of the module. (Max 3.1V DC)