TABLE 3
RS-422 inputs
PARAMETER
MIN.
TYP.
MAX.
UNITS
CONDITION/DETAILS
Inputs
–
–
2
–
Signaling rate
DATA
–
–
10
Mbps
DCLK
–
–
10
MHz
Input voltage
operating range
-7
–
12
V
Do not exceed operating range.
logic 0
–
–
0.2
V
V
IN+
- V
IN-
.
logic 1
0.2
–
–
V
V
IN+
- V
IN-
.
common mode voltage
-7
–
12
V
overvoltage protection
-7
–
12
V
Voltages outside of this range can damage input.
ESD protection
-8
–
8
kV
Human Body Model.
Input resistance
between inputs
–
120
–
Ω
Module powered on and inputs terminated.
between inputs
–
120
–
Ω
Module powered off and inputs terminated.
each input to GND
–
20
–
MΩ
Module powered on.
each input to GND
–
60
–
kΩ
Module powered off.
TABLE 4
RS-422 outputs
PARAMETER
MIN.
TYP.
MAX.
UNITS
CONDITION/DETAILS
Outputs
–
–
1
–
Signaling rate
PROG_DCLK
–
1
–
MHz
Output voltage
absolute operating range
-0.3
–
6
V
Absolute voltage of the operating signal must stay within this
range.
logic 0
–
–
-2
V
V
0+
- V
0- ;
R
LOAD
= 100Ω.
logic 1
2
–
–
V
V
0+
- V
0- ;
R
LOAD
= 100Ω.
common mode voltage
-7
–
12
V
short circuit current
–
–
150
mA
short circuit duration
∞
–
–
s
Only one output may be shorted at a time.
ESD protection
-15
–
15
kV
Human Body Model.
Output resistance
–
120
–
Ω
SAM/DEC/008
3