Datasheet

MAX13442E/MAX13443E/MAX13444E
±15kV ESD-Protected, ±80V Fault-Protected,
Fail-Safe RS-485/J1708 Transceivers
12 ______________________________________________________________________________________
RECEIVING
INPUTS OUTPUTS
RE DE (V
A
- V
B
)RO
0 X -0.05V 1
0 X -0.2V 0
0 X Open/shorted 1
1 1 X High-Z
1 0 X Shutdown
Table 3. MAX13442E/MAX13443E
(RS-485/RS-422)
X = Don’t care.
RECEIVING
INPUTS OUTPUTS
RE DE (V
A
- V
B
)RO
0 X -0.05V 1
0 X -0.2V 0
0 X Open/shorted 1
1 0 X High-Z
1 1 X Shutdown
Table 4. MAX13444E (RS-485/RS-422)
X = Don’t care.
Function Tables
TRANSMITTING
INPUTS OUTPUTS
RE DE DI A B
0 0 X High-Z High-Z
01001
01110
1 0 X Shutdown Shutdown
11001
11110
Table 1. MAX13442E/MAX13443E
(RS-485/RS-422)
X = Don’t care.
TRANSMITTING
INPUTS OUTPUTS CONDITIONS
TXD DE AB —
0 1 High-Z High-Z —
1 1 High-Z High-Z —
0 0 0 1 Dominant state
1 0 High-Z High-Z Recessive state
Table 2. MAX13444E (J1708) Application