Datasheet

MAX3157
High CMRR RS-485 Transceiver
with ±50V Isolation
_______________________________________________________________________________________ 5
0
40
20
60
120
140
100
80
160
-40 -20 -10 0 10 20 30-30 40 50 60 70 80 90
SUPPLY CURRENT vs. TEMPERATURE
MAX1357toc01
TEMPERATURE (°C)
SUPPY CURRENT (mA)
R
L
= 54Ω
NO LOAD
-300
-100
-200
200
100
0
300
-40 -20 -10 0 10 20 30-30 40 50 60 70 80 90
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX1357toc02
TEMPERATURE (°C)
SUPPY CURRENT (µA)
V
ISOCOM
= -50V
V
ISOCOM
= 0
V
ISOCOM
= +50V
0
10
5
25
20
15
40
35
30
45
021 3456
RECEIVER OUTPUT CURRENT
vs. RECEIVER OUTPUT LOW VOLTAGE
MAX3157toc03
OUTPUT LOW VOLTAGE (V)
OUTPUT CURRENT (mA)
0
6
2
4
12
10
8
18
16
14
20
0 2.0 2.51.51.00.5 3.0 3.5 4.0 4.5 5.0 5.5
RECEIVER OUTPUT CURRENT
vs. RECEIVER OUTPUT HIGH VOLTAGE
MAX3157toc04
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
0
0.15
0.10
0.05
0.25
0.20
0.45
0.40
0.35
0.30
0.50
-40 -20 0 20 40 60 80 100
RECEIVER OUTPUT LOW VOLTAGE
vs. TEMPERATURE
MAX3157toc05
TEMPERATURE (°C)
OUTPUT LOW VOLTAGE (V)
I
RO
= 8mA
3.95
4.05
4.00
4.15
4.10
4.35
4.30
4.25
4.20
4.40
-40 -20 0 20 40 60 80 100
RECEIVER OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX3157toc06
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
I
RO
= -8mA
0
40
20
80
60
140
120
100
160
042 6 8 101214
DRIVER OUTPUT CURRENT
vs. DRIVER OUTPUT LOW VOLTAGE
MAX3157toc07
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
-120
-90
-110
-100
-60
-80
-70
-10
-30
-20
-40
-50
0
-8 -4-6 -20246
DRIVER OUTPUT CURRENT
vs. DRIVER OUTPUT HIGH VOLTAGE
MAX3157toc08
OUTPUT HIGH VOLTAGE (V)
OUTPUT CURRENT (mA)
100
0.01
01 32546
DRIVER OUTPUT CURRENT
vs. DIFFERENTIAL OUTPUT VOLTAGE
0.1
MAX3157toc09
DIFFERENTIAL OUTPUT VOLTAGE (V)
OUTPUT
CURRENT
(
m
A)
1
10
Typical Operating Characteristics
(V
CC
= +5V, YR = ZR = AR = BR = ISOCOM, C1 = C2 = 0.047µF, C3 = 1µF, C4 = 10nF, T
A
= +25°C, unless otherwise noted.)