MAX3232CSE(1999) データシートの表示（PDF） - Maxim Integrated
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MAX3232CSE
(Rev.:1999)
(Rev.:1999)
Maxim Integrated
MAX3232CSE Datasheet PDF : 16 Pages
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3.0V to 5.5V, Low-Power, up to 1Mbps, True RS-232
Transceivers Using Four 0.1µF External Capacitors
_____________________________Typical Operating Characteristics (continued)
(VCC = +3.3V, 235kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ, TA = +25°C, unless otherwise noted.)
MAX3241
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
7.5
VOUT+
5.0
MAX3241
SLEW RATE
vs. LOAD CAPACITANCE
24
22
20
MAX3241
SUPPLY CURRENT vs. LOAD
CAPACITANCE WHEN TRANSMITTING DATA
45
235kbps
40
35
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)
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)
30
25
20
15
10
5
0
0
120kbps
20kbps
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3237
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE (MBAUD = GND)
7.5
5.0
2.5
1 TRANSMITTER AT 240kbps
4 TRANSMITTERS AT 15kbps
0 3kΩ + CL LOADS
VCC = 3.3V
-2.5
-5.0
-7.5
0
1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3237
SLEW RATE vs. LOAD CAPACITANCE
(MBAUD = VCC)
70
60
-SLEW, 1Mbps
50
+SLEW, 1Mbps
-SLEW, 2Mbps
40
+SLEW, 2Mbps
30
20
1 TRANSMITTER AT FULL DATA RATE
10
4 TRANSMITTERS AT 1/16 DATA RATE
3kΩ + CL LOAD EACH OUTPUT
0 VCC = 3.3V
0
500
1000 1500 2000
LOAD CAPACITANCE (pF)
MAX3237
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE (MBAUD = VCC)
7.5
1Mbps
5.0
2Mbps
1.5Mbps
2.5
1 TRANSMITTER AT FULL DATA RATE
4 TRANSMITTERS AT 1/16 DATA RATE
0 3kΩ + CL LOAD, EACH OUTPUT
VCC = 3.3V
-2.5
2Mbps
1.5Mbps
-5.0
1Mbps
-7.5
0
500
1000 1500
2000
LOAD CAPACITANCE (pF)
MAX3237
SUPPLY CURRENT vs.
LOAD CAPACITANCE (MBAUD = GND)
60
50
240kbps
40
120kbps
30
20kbps
20
1 TRANSMITTER AT FULL DATA RATE
10
4 TRANSMITTERS AT 1/16 DATA RATE
3kΩ + CL LOADS
VCC = 3.3V
0
0 1000 2000 3000 4000 5000
LOAD CAPACITANCE (pF)
MAX3237
SLEW RATE vs. LOAD CAPACITANCE
(MBAUD = GND)
12
10
-SLEW
+SLEW
8
6
4
1 TRANSMITTER AT 240kbps
2
4 TRANSMITTERS AT 15kbps
3kΩ + CL LOADS
VCC = 3.3V
0
0 1000 2000 3000 4000
LOAD CAPACITANCE (pF)
5000
MAX3237
SKEW vs. LOAD CAPACITANCE
(tPLH - tPHL)
70
1 TRANSMITTER AT 512kbps
60
4 TRANSMITTERS AT 32kbps
3kΩ + CL LOADS
50
VCC = 3.3V
MBAUD = VCC
40
MAX
AVERAGE; 10 PARTS
30
20
10
0
0
MIN
500 1000 1500 2000 2500
LOAD CAPACITANCE (pF)
_______________________________________________________________________________________ 5
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