
Cinterion
®
LTE Terminals Hardware Interface Description
4 Electrical and Environmental Characteristics
60
ELSxT_HID_v04
2018-09-04
Confidential / Preliminary
Page 48 of 102
4
Electrical and Environmental Characteristics
4.1
Absolute Maximum Ratings
Table 19:
Absolute maximum ratings
Parameter
Port / Description
Min.
Max.
Unit
Supply voltage
PLUS
-40
57
V
Input voltage for on/off
control lines
RST_IN
-5
30
V
RS-232 input voltage
TXD0, DTR0, RTS0
-25
+25
V
GPIO connector pins input
voltage (incl. VCCref)
8-pin and 12-pin connectors
(if pins specified/configured as input pins)
-0.3
6
V
GPIO connector pins output
current
8-pin and 12-pin connectors
(if pins specified/configured as output pins)
0
50mA drawn
@each pin
1
1. Please note that if the VCCref pin is connected to the +5Vout pin, no more than 100mA should be drawn
by
all
pins. In this case it is no longer allowed to draw a maximum of 50mA for each pin.
--
Immunity against discharge
of static electricity
All interfaces (lines)
Contact discharge
Air discharge
-4
-8
+4
+8
kV
kV
Table 20:
Operating supply voltage for LTE Terminals
Parameter
Min
Typ
Max
Unit
Supply voltage PLUS
measured at (6-pole) west-
ern jack plug (1 to 6)
8
12
57
V
Minimum supply voltage
PLUS measured at (6-pole)
western jack plug (1 to 6)
@any time,
incl. all ripple, drops and
temperature fluctuations
7.6
V