MAX3221 データシートの表示（PDF） - Maxim Integrated
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MAX3221 Datasheet PDF : 17 Pages
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MAX3221/MAX3223/MAX3243
+3V to +5.5V RS-232 Transceivers
with AutoShutdown
Typical Operating Characteristics
(VCC = +3.3V, 235kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ, TA = +25°C, unless otherwise noted.)
MAX3221/MAX3223
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
6
5
VOUT+
4
3
2
1
0
-1
-2
-3
-4
VOUT-
-5
-6
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3221/MAX3223
SLEW RATE
vs. LOAD CAPACITANCE
22
20
18
16
14
-SLEW
12
10
8
+SLEW
6
4 FOR DATA RATES UP TO 235kbps
2
0
150 500 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3221/MAX3223
SUPPLY CURRENT vs. LOAD CAPACITANCE
WHEN TRANSMITTING DATA
MAX3221/3223-03
40
35
35
30
235kbps
30
25
25
20
120kbps
20
15
15
10
20kbps
10
5
5
0
1000 2000 3000 4000
LOAD CAPACITANCE (pF)
0
5000
MAX3243
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
7.5
VOUT+
5.0
2.5
1 TRANSMITTER AT 235kbps
2 TRANSMITTERS AT 30kbps
0
-2.5
-5.0
VOUT-
-7.5
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3243
SLEW RATE
vs. LOAD CAPACITANCE
24
22
20
18
-SLEW
16
14
12
+SLEW
10
8 ALL OUTPUTS LOADED WITH 3kΩ +CL
6 0.1μF CHARGE-PUMP CAPACITORS
4 FOR ALL DATA RATES UP TO 235kbps
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3243
SUPPLY CURRENT vs. LOAD
CAPACITANCE WHEN TRANSMITTING DATA
45
235kbps
40
35
30
120kbps
25
20
20kbps
15
10
5
0
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
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