MAX253E View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX253E Datasheet PDF : 18 Pages
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MAX253
Transformer Driver for
Isolated RS-485 Interface
Typical Operating Characteristics
(Circuit of Figure 6, VIN = 5V ±10%, TA = +25°C, unless otherwise noted.)
OUTPUT RESISTANCE vs. TEMPERATURE
(FS = LOW)
10.5
MEASURED AT TP1
10.0
9.5
VIN = 4.5V
9.0
8.5
8.0
VIN = 5.0V
7.5
7.0
6.5
6.0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
OUTPUT RESISTANCE vs. TEMPERATURE
(FS = HIGH)
15
MEASURED AT TP1
12
VIN = 4.5V
VIN = 5.0V
9
6
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
1.0
INCLUDES SWITCH LEAKAGE CURRENTS
0.8
0.6
0.4
0.2
0
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
D1, D2 FREQUENCY vs. TEMPERATURE
(FS = LOW)
260
240
VIN = 6.0V
220
VIN = 5.5V
200
180 VIN = 5.0V
160
-60 -40 -20
VIN = 4.5V
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
D1, D2 FREQUENCY vs. TEMPERATURE
(FS = HIGH)
480
440
VIN = 6.0V
400
VIN = 5.5V
360
320 VIN = 5.0V
280
-60 -40 -20
VIN = 4.5V
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
(FS = LOW)
600
VIN = 6.0V
550
500
VIN = 5.5V
450
400
VIN = 5.0V
350
300
250
-60 -40 -20
VIN = 4.5V
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
SUPPLY CURRENT vs. TEMPERATURE
(FS = HIGH)
850
800
VIN = 6.0V
750
700
VIN = 5.5V
650
600
VIN = 5.0V
550
500
VIN = 4.5V
450
400
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
EFFICIENCY vs. LOAD CURRENT
(FS = LOW)
100
90
80
VIN = 5.5V
70
VIN = 4.5V
60
50
40
30
20
10
0
0 20 40 60 80 100 120 140 160 180 200
LOAD CURRENT (mA)
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