User guide

UC864-E/G/WD/WDU Hardware User Guide
1vv0300766a Rev.4
- 03/02/09
Reproduction forbidden without Telit Communications S.p.A’s. written authorization - All Rights Reserved. Page 73 of 78
14. ESD Protection
Telit recommend that the TVS diodes or varistor should be used to protect UC864-
E/G/WDU from ESD.
14.1. ESD Protection for SIM interface
The following schematics are recommended for SIM interface.
The single TVS diode or varistor can be used on the respective pins.
NOTE:
The UC864-WD module is provided with an internal ESD protection for SIM interface,
USB interface and power supplies.