
M
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
14
______________________________________________________________________________________
MAX3072E/MAX3075E/MAX3078E
TRANSMITTING
INPUTS
DE
1
1
0
0
OUTPUTS
B/Z
0
1
High-Z
Shutdown
RE
X
X
0
1
DI
1
0
X
X
A/Y
1
0
High-Z
Function Tables (continued)
MAX3079E
TRANSMITTING
INPUTS
OUTPUTS
TXP
0
0
1
1
X
X
RE
X
X
X
X
0
1
DE
1
1
1
1
0
0
DI
1
0
1
0
X
X
Z
0
1
1
0
Y
1
0
0
1
High-Z
High-Z
Shutdown
RECEIVING
INPUTS
OUTPUTS
RO
1
0
0
1
1
0
0
1
1
1
0
0
High-Z
Shutdown
H/
F
0
0
0
0
1
1
1
1
0
1
0
1
X
X
RXP
0
0
1
1
0
0
1
1
0
0
1
1
X
X
RE
0
0
0
0
0
0
0
0
0
0
0
0
1
1
DE
X
X
X
X
0
0
0
0
X
0
X
0
1
0
A, B
Y, Z
X
X
X
X
> -50mV
< -200mV
> -50mV
< -200mV
X
X
X
X
Open/shorted
X
Open/shorted
X
X
X
> -50mV
< -200mV
> -50mV
< -200mV
X
Open/shorted
X
Open/shorted
X
X
RECEIVING
INPUTS
DE
X
X
OUTPUTS
RO
1
0
RE
0
0
A-B
≥
-50mV
≤
-200mV
0
X
Open/
shorted
1
1
1
1
0
X
X
High-Z
Shutdown
X = Don
’
t care; shutdown mode, driver and receiver outputs are high impedance.