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EIA RS-485, Especificaciones de la normaEIA RS-485 Specification Summary.
Parameter |
Conditions |
Min |
Max |
Units |
Driver Output Voltage Open Circuit |
|
1.5 -1.5 |
6 -6 |
V V |
Driver Output Voltage Loaded |
RLOAD = 54Ω |
1.5 -1.5 |
5 -5 |
V V |
Driver Output Short-Circuit Current |
Per output to +12V or –7V |
|
±250 |
mA |
Driver Output Rise Time |
RLoad = 54Ω CLoad = 50 pF |
|
30 |
% of Bit Width |
Driver Common Mode Voltage |
RLoad = 54Ω |
-1 |
3 |
V |
Receiver Sensitivity |
-7 ≤ Vcm ≤ +12 |
|
±200 |
mV |
Receiver Common-Mode Voltage Range |
|
-7 |
+12 |
V |
Receiver Input Resistance |
|
12K |
|
Ω |
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