Datasheet

+5V-Powered, Multichannel RS-232
Drivers/Receivers
8.5
6.5
4.5 5.5
TRANSMITTER OUTPUT
VOLTAGE (V
OH
) vs. V
CC
7.0
8.0
MAX220-04
V
CC
(V)
V
OH
(V)
5.0
7.5
1 TRANSMITTER
LOADED
3 TRANS-
MITTERS
LOADED
4 TRANSMITTERS
LOADED
2 TRANSMITTERS
LOADED
T
A
= +25°C
C1–C4 = 1μF
TRANSMITTER
LOADS =
3kΩ || 2500pF
7.4
6.0
0 2500
TRANSMITTER OUTPUT VOLTAGE (V
OH
)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
6.4
6.2
7.2
7.0
MAX220-05
LOAD CAPACITANCE (pF)
V
OH
(V)
15001000500 2000
6.8
6.6
160kb/s
80kb/s
20kb/s
T
A
= +25°C
V
CC
= +5V
3 TRANSMITTERS LOADED
R
L
= 3kΩ
C1–C4 = 1μF
12.0
4.0
0 2500
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
6.0
5.0
11.0
9.0
10.0
MAX220-06
LOAD CAPACITANCE (pF)
SLEW RATE (V/μs)
15001000500 2000
8.0
7.0
T
A
= +25°C
V
CC
= +5V
LOADED, R
L
= 3kΩ
C1–C4 = 1μF
1 TRANSMITTER LOADED
2 TRANSMITTERS
LOADED
3 TRANSMITTERS
LOADED
4 TRANSMITTERS
LOADED
-6.0
-9.0
4.5 5.5
TRANSMITTER OUTPUT
VOLTAGE (V
OL
) vs. V
CC
-8.0
-8.5
-6.5
-7.0
MAX220-07
V
CC
(V)
V
OL
(V)
5.0
-7.5
4 TRANS-
MITTERS
LOADED
T
A
= +25°C
C1–C4 = 1μF
TRANSMITTER
LOADS =
3kΩ || 2500pF
1 TRANS-
MITTER
LOADED
2 TRANS-
MITTERS
LOADED
3 TRANS-
MITTERS
LOADED
-6.0
-7.6
0 2500
TRANSMITTER OUTPUT VOLTAGE (V
OL
)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
-7.0
-7.2
-7.4
-6.2
-6.4
MAX220-08
LOAD CAPACITANCE (pF)
V
OL
(V)
15001000500 2000
-6.6
-6.8
160kb/s
80kb/s
20kb/s
T
A
= +25°C
V
CC
= +5V
3 TRANSMITTERS LOADED
R
L
= 3kΩ
C1–C4 = 1μF
10
-10
0
5 10 15 20 25 30 35 40 45 50
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CURRENT
-2
-6
-4
-8
8
6
MAX220-09
CURRENT (mA)
V+, V- (V)
4
2
0
V+ AND V-
EQUALLY
LOADED
V- LOADED,
NO LOAD
ON V+
T
A
= +25°C
V
CC
= +5V
C1–C4 = 1μF
ALL TRANSMITTERS UNLOADED
V+ LOADED,
NO LOAD
ON V-
__________________________________________Typical Operating Characteristics
MAX223/MAX230–MAX241
*SHUTDOWN POLARITY IS REVERSED
V+, V- WHEN EXITING SHUTDOWN
(1μF CAPACITORS)
MAX220-13
V
SHDN
*
V-
O
V+
500ms/div
Maxim Integrated
7
MAX220–MAX249
MAX220–MAX249