Datasheet

1µA Supply Current, 1Mbps, 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
Typical Operating Characteristics (continued)
(V
CC
= +3.3V, 250kbps data rate, C1–C4 = 0.1µF, all transmitters loaded with 3kΩ and C
L
, T
A
= +25°C, unless otherwise noted.)
-6
-5
-4
-3
-2
-1
0
1
2
3
4
5
6
0 1000 2000 3000 4000 5000
MAX3244
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3224-10
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE (V)
1 TRANSMITTER AT 250kbps
2 TRANSMITTERS AT 15.6kbps
V
OUT+
V
OUT-
0
4
2
8
6
12
10
14
0 1000 2000 3000 4000 5000
MAX3244
SLEW RATE vs. LOAD CAPACITANCE
MAX3224-11
LOAD CAPACITANCE (pF)
SLEW RATE (V/μs)
0
30
20
10
40
50
60
0 20001000 3000 4000 5000
MAX3244
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX3224-12
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
250kbps
120kbps
20kbps
1 TRANSMITTER AT 250kbps
2 TRANSMITTERS AT 15.6kbps
-7.5
0
-2.5
-5.0
2.5
5.0
7.5
0 800400 1200 1600 2000
MAX3245
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3224-13
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE (V)
2Mbps
2Mbps
1.5Mbps
1.5Mbps
1Mbps
1Mbps
1 TRANSMITTER AT FULL DATA RATE
2 TRANSMITTERS AT 1/16 DATA RATE
0
20
10
40
30
60
50
70
90
80
100
0 400 800 1200 1600 2000
MAX3245
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX3224-15
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
2Mbps
1.5Mbps
1Mbps
1 TRANSMITTER AT FULL DATA RATE
2 TRANSMITTERS AT 1/16 DATA RATE
0
20
10
40
30
60
50
70
0 400 800 1200 1600 2000
MAX3245
SLEW RATE vs. LOAD CAPACITANCE
MAX3224-14
LOAD CAPACITANCE (pF)
SLEW RATE (V/μs)
1 TRANSMITTER AT 1Mbps
2 TRANSMITTERS AT 62.5kbps
0
15
10
5
20
25
30
35
40
45
50
0 1000 2000 3000
MAX3245
TRANSMITTER SKEW vs.
LOAD CAPACITANCE
MAX3224-16
LOAD CAPACITANCE (pF)
TRANSMITTER SKEW (ns)
6
Maxim Integrated
MAX3224–MAX3227/MAX3244/MAX3245