User's Manual

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-QUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User GuideQUAD Automotive V2 Hardware User Guide
QUAD Automotive V2 Hardware User Guide
1vv0300840 Rev.3 2010-04-08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 39 of 71
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:
NOTE:NOTE:
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)