Datasheet

+3V to +5V, 2500V
RMS
Isolated RS-485/RS-422
Transceivers with ±15kV ESD Protection
Test Circuits
R
L
R
L
V
OD
V
OC
Y
Z
Figure 1. Driver DC Test Load
DI
DE
HIGH
C
L
C
L
Y
Z
GND
GND2
R
L
R
L
Figure 2. Driver Timing Test Circuit
TGM-240
1/2
BAT54C
TRANSFORMER
DRIVER
BARRIER
TRANSCEIVER
ISOLATION BARRIER
BARRIER
TRANSCEIVER
1/2
BAT54C
VOLTAGE
REGULATOR
GND2
+3.0V TO +5.5V
DRIVER
RECEIVER
A
B
Y
Z
C
L
SLO
RO2
ST1
RO1
RE
DE
DI
GND1
ST2 V
CC2
V
CC1
V
CC2
0.1μF
0.1μF
CONTROL GROUND
RS-485 GROUND
10μF
10μF
MAX3535E
C
L
2R
L
Figure 5. Self-Oscillating Configuration
500Ω
V
CC2
C
L
Y/Z
GND2
500Ω
Figure 3. Driver Timing Test Load
1kΩ
V
CC1
/V
CC2
C
L
RO1/RO2
GND1/GND2
1kΩ
Figure 4. Receiver Timing Test Load
MAX3535E/MXL1535E
14
Maxim Integrated
MAX3535E/MXL1535E