Certus OEM Supplement
Page 15 of 23
Version 1.0
22 Jan 2021
7.4
Electrical Specifications
Parameter
Minimum
Typical
Maximum
UART
Tx Voltage Low
0 V
Tx Voltage High
3.3 V
Tx Short Circuit Current
±60 mA
Rx Threshold Low
0.6 V
1.2 V
Rx Threshold High
1.5 V
2.0 V
GPIO when set to 5 V
Output Voltage Low
0 V
0.3 V
Output Voltage High
4.8 V
5 V
Input Voltage
-20 V
20 V
Input Threshold Low
1.5 V
Input Threshold High
3.5 V
Output Current
5 mA
1PPS when set to 5 V
Output Voltage Low
0 V
0.3 V
Output Voltage High
4.5 V
5 V
Output Current
50 mA
GPIO when set to 3.3 V
Output Voltage Low
0 V
0.3 V
Output Voltage High
3 V
3.3 V
Output Current
5 mA
Input Voltage
-5 V
5 V
Input Threshold Low
0.8 V
Input Threshold High
2 V
1PPS when set to 3.3 V
Output Voltage Low
0 V
0.1 V
Output Voltage High
3 V
3.3 V
Output Current
50 mA
GNSS Antenna
Active Antenna Supply Voltage
4.5 V
4.6 V
Antenna Supply Current
200 mA
Table 9: Electrical specifications
