+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX223/MAX230–MAX241
TRANSMITTER OUTPUT
VOLTAGE (V
OH
) vs. V
CC
MAX220-04
MAX220–MAX249
TRANSMITTER OUTPUT VOLTAGE (V
OH
)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
MAX220-05
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
1 TRANSMITTER LOADED
11.0
10.0
SLEW RATE (V/µs)
9.0
8.0
7.0
6.0
5.0
4.0
3 TRANSMITTERS
LOADED
4 TRANSMITTERS
LOADED
0
500
1000
1500
2000
2500
T
A
= +25°C
V
CC
= +5V
LOADED, R
L
= 3kΩ
C1–C4 = 1µF
2 TRANSMITTERS
LOADED
MAX220-06
MAX220-09
8.5
2 TRANSMITTERS
LOADED
8.0
V
OH
(V)
7.4
7.2
7.0
V
OH
(V)
12.0
1 TRANSMITTER
LOADED
7.5
6.8
6.6
6.4
6.2
6.0
0
7.0
6.5
4.5
3 TRANS-
MITTERS
LOADED
T
A
= +25°C
C1–C4 = 1µF
TRANSMITTER
4 TRANSMITTERS LOADS =
3kΩ || 2500pF
LOADED
5.0
V
CC
(V)
5.5
160kbits/sec
80kbits/sec
20kbits/sec
T
A
= +25°C
V
CC
= +5V
3 TRANSMITTERS LOADED
R
L
= 3kΩ
C1–C4 = 1µF
500
1000
1500
2000
2500
LOAD CAPACITANCE (pF)
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT
VOLTAGE (V
OL
) vs. V
CC
4 TRANS-
MITTERS
LOADED
T
A
= +25°C
C1–C4 = 1µF
TRANSMITTER
LOADS =
3kΩ || 2500pF
MAX220-07
TRANSMITTER OUTPUT VOLTAGE (V
OL
)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
-6.2
-6.4
-6.6
V
OL
(V)
-6.8
-7.0
-7.2
T
A
= +25°C
V
CC
= +5V
3 TRANSMITTERS LOADED
R
L
= 3kΩ
C1–C4 = 1µF
160kbits/sec
80kbits/sec
20Kkbits/sec
MAX220-08
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CURRENT
10
8
6
4
V+, V- (V)
2
0
-2
-4
T
A
= +25°C
V
CC
= +5V
C1–C4 = 1µF
V- LOADED,
V+ AND V-
NO LOAD
EQUALLY
ON V+
LOADED
-6.0
-6.5
-7.0
V
OL
(V)
-7.5
-8.0
-8.5
-9.0
4.5
5.0
V
CC
(V)
1 TRANS-
MITTER
LOADED
2 TRANS-
MITTERS
LOADED
3 TRANS-
MITTERS
LOADED
-6.0
V+ LOADED,
NO LOAD
ON V-
-6
-8
-10
0
500
1000
1500
2000
2500
0
5
LOAD CAPACITANCE (pF)
ALL TRANSMITTERS UNLOADED
10 15 20 25 30 35 40 45 50
CURRENT (mA)
-7.4
-7.6
5.5
V+, V- WHEN EXITING SHUTDOWN
(1µF CAPACITORS)
MAX220-13
V+
O
V-
SHDN*
500ms/div
*SHUTDOWN POLARITY IS REVERSED
FOR NON MAX241 PARTS
_______________________________________________________________________________________
7
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
