1µA Supply Current, 1Mbps, 3.0V to 5.5V,
RS-232 Transceivers with AutoShutdown Plus
MAX3224–MAX3227/MAX3244/MAX3245
†
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.)
MAX3244
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX3224-10
MAX3244
SLEW RATE vs. LOAD CAPACITANCE
MAX3224-11
MAX3244
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
1 TRANSMITTER AT 250kbps
2 TRANSMITTERS AT 15.6kbps
250kbps
120kbps
MAX3224-12
TRANSMITTER OUTPUT VOLTAGE (V)
6
5
4
3
2
1
0
-1
-2
-3
-4
-5
-6
0
14
12
SLEW RATE (V/μs)
10
8
6
4
60
50
SUPPLY CURRENT (mA)
40
30
20kbps
20
10
0
V
OUT+
1 TRANSMITTER AT 250kbps
2 TRANSMITTERS AT 15.6kbps
V
OUT-
1000
2000
3000
4000
5000
2
0
0
1000
2000
3000
4000
5000
0
1000
2000
3000
4000
5000
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
MAX3245
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
TRANSMITTER OUTPUT VOLTAGE (V)
MAX3224-13
MAX3245
SLEW RATE vs. LOAD CAPACITANCE
MAX3224-14
7.5
5.0
2Mbps
2.5
0
-2.5
-5.0
-7.5
0
400
800
1200
1600
1.5Mbps
1 TRANSMITTER AT FULL DATA RATE
2 TRANSMITTERS AT 1/16 DATA RATE
2Mbps
1.5Mbps 1Mbps
1Mbps
70
60
SLEW RATE (V/μs)
50
40
30
20
10
0
1 TRANSMITTER AT 1Mbps
2 TRANSMITTERS AT 62.5kbps
0
400
800
1200
1600
2000
2000
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
MAX3245
OPERATING SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX3224-15
MAX3245
TRANSMITTER SKEW vs.
LOAD CAPACITANCE
45
40
TRANSMITTER SKEW (ns)
MAX3224-16
100
90
80
SUPPLY CURRENT (mA)
70
60
50
40
30
20
10
0
0
400
800
1200
1600
1 TRANSMITTER AT FULL DATA RATE
2 TRANSMITTERS AT 1/16 DATA RATE
1Mbps
2Mbps
1.5Mbps
50
35
30
25
20
15
10
5
0
2000
0
1000
2000
3000
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
6
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
