MAX239 Maxim Integrated Products, MAX239 Datasheet - Page 7

• Manufacturer Part Number: MAX239
• Description: (MAX220 - MAX249) +5V-Powered / Multichannel RS-232 Drivers/Receivers
• Manufacturer: Maxim Integrated Products

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