Datasheet

RS-485 Transceivers with Low-Voltage
Logic Interface
Function Tables and Functional Diagrams
TRANSMITTING
INPUTS OUTPUTS
RE DE DI Z Y
X11 0 1
X10 1 0
00X
High-
Impedance
High-
Impedance
1 0 X Shutdown
RECEIVING
INPUTS OUTPUT
RE DE A-B RO
0X
≥ -50mV
1
0X
≤ - 200m V
0
0X
Open/
Shorted
1
1 1 X High-Impedance
1 0 X Shutdown
TRANSMITTING
INPUTS OUTPUTS
RE DE DI B A
X11 0 1
X10 1 0
10X
High-
Impedance
High-
Impedance
0 0 X Shutdown*
RECEIVING
INPUTS OUTPUT
RE DE A-B RO
0X
≥ -50mV
1
0X
≤ - 200m V
0
0X
Open/
Shorted
1
1 1 X High-Impedance
1 0 X Shutdown*
MAX13432E/MAX13433E (Full Duplex)
MAX13430E/MAX13431E (Half Duplex)
X = Don’t care.
* Shutdown mode, driver and receiver outputs are in high impedance.
Figure 9. Functional Diagrams
A
B
Z
Y
GND
V
CC
V
L
DI
RE
DE
RO
A
B
GND
V
CC
V
L
MAX13430E
MAX13431E
MAX13432E
MAX13433E
DI
RE
DE
RO
D
R
R
D
MAX13430E–MAX13433E
14
Maxim Integrated