Rs232 Interface - MTX -4G-JAVA-IoT Hardware User's Manual

1.2 RS232 interface

ABSOLUTE MAXIMUM RATINGS
Symbol Parameter
V Input voltage range
I
V Output voltage range
o
Electrostatic discharge
CHARACTERISTICS
Symbol Parameter
Driver high-level output
V
OH
voltage
Driver low-level output
V
OL
voltage
r Driver output resistance
o
Receiver positive-going
V
IT+
input threshold voltage
Receiver negative-going
V
IT-
input threshold voltage
Receiver input hysteresis
V
hys
(VIT+ - VIT-)
r Receiver input resistance
i
MTX-Java-IoT | 2018/2
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Conditions
Drivers
Receivers
Drivers
Receivers
Human body model
Conditions
R =3kΩ to GND
L
R =3kΩ to GND
L
VIN = 0V
Input voltage
±3 to ±25V
Min Max
-0.3 65
-25 25
-13.2 13.2
-0.3 5
2
Min Typ Max
5 5.4
-5 5.4
300 10M
1.5 2.4
0.6 1.2
0.3
3 5 7
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Unit
V
V
V
V
kV
Unit
V
V
Ω
V
V
V
kΩ
44