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User's Guide

ManualsBrandsTelit Communications ManualsElectronicsGSM 850, E-GSM 900, DCS 1800, PCS 1900, FDD IV, 2G/3.5G module
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UC864-E-AUTO / AWS-AUTO Hardware User Guide
1vv0300795 Rev.11 – 2010/11/18
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 44 of 78
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)