Doc. No: Unex-QSG-21-001
9/27
A printed version of this document is an uncontrolled copy
© 2021 Unex Technology Corporation – Company Confidential
7.
Electrical Characteristics
7.1.
Absolute Maximum Ratings
Over operating free-air temperature range (unless otherwise noted).
Table 1. Absolute maximum ratings
Parameters
Conditions
Min.
Max.
Unit
Storage Temperature
-
-40
105
°C
Supply Voltage
USB0 Vbus
-0.3
6.0
V
POWER (J8.1)
-180
180
V
I/O Interface Voltage
RS232 Receiver
*1
-13
60
V
RS232 Driver
*2
-6
60
V
CAN0/CAN1
*3
-40
40
V
USB1_Vbus
-2
25/20
*4
V
GPIO1/GPIO2
-0.5
16.5
V
EXT_1PPS
RESET
USB_DN/USB_DP
-0.3
16.5
V
V2X maximum input level
-
-
10
dBm
GNSS maximum input level
-
-
-10
dBm
Note:
*1: RS232 Receiver: TX (J8.4), EXT_GNSS_RX (J8.13)
*2: RS232 Driver: RX (J8.3), EXT_GNSS_TX (J8.14)
*3: CAN0/CAN1: CAN0_H (J8.6), CAN0_L (J8.16), CAN1_H (J8.7), CAN1_L (J8.17)
*4: If USB1_Vbus = ON, 25V; if USB1_Vbus = OFF, 20V
Note:
(1) Operation outside the Absolute Maximum Ratings may cause permanent device damage. Absolute
Maximum Ratings do not imply functional operation of the device at these or any other conditions
beyond those listed under Recommended Operating Conditions. If used outside the Recommended
Operating Conditions but within the Absolute Maximum Ratings, the device may not be fully functional,
and this may affect device reliability, functionality, performance, and shorten the device lifetime.
(2) All voltages are with respect to network GND.
7.2.
Recommended Operating Conditions
Over operating free-air temperature range (unless otherwise noted).
Table 2. Recommended operating conditions
Parameters
Conditions
Min.
Typ. Max. Unit
Ta (Ambient operating temperature)
Free-air temp.
-40
25
85
°C
Supply voltage
USB0 Vbus
4.8
5.0
5.2
V
POWER
9
12
48
V
USB1_Vbus output
Vbus voltage
4.8
5.0
5.2
V
