MAX239C-D View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX239C-D Datasheet PDF : 36 Pages
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+5V-Powered, Multichannel RS-232
Drivers/Receivers
__________________________________________Typical Operating Characteristics
MAX223/MAX230–MAX241
TRANSMITTER OUTPUT
VOLTAGE (VOH) vs. VCC
8.5
2 TRANSMITTERS
LOADED
8.0
1 TRANSMITTER
LOADED
7.5
3 TRANS-
MITTERS
LOADED
7.0
6.5
4.5
TA = +25°C
C1–C4 = 1µF
TRANSMITTER
4 TRANSMITTERS LOADS =
LOADED
3kΩ || 2500pF
5.0
5.5
VCC (V)
TRANSMITTER OUTPUT
VOLTAGE (VOL) vs. VCC
-6.0
4 TRANS- TA = +25°C
MITTERS C1–C4 = 1µF
-6.5
LOADED TRANSMITTER
LOADS =
-7.0
3kΩ || 2500pF
-7.5
1 TRANS-
-8.0 MITTER
LOADED
-8.5
2 TRANS- 3 TRANS-
MITTERS MITTERS
LOADED
LOADED
-9.0
4.5
5.0
5.5
VCC (V)
TRANSMITTER OUTPUT VOLTAGE (VOH)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
7.4
7.2
7.0
6.8
160kbits/sec
80kbits/sec
6.6
20kbits/sec
6.4 TA = +25°C
VCC = +5V
6.2
3 TRANSMITTERS LOADED
RL = 3kΩ
C1–C4 = 1µF
6.0
0
500 1000 1500 2000 2500
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE (VOL)
vs. LOAD CAPACITANCE AT
DIFFERENT DATA RATES
-6.0
TA = +25°C
-6.2
VCC = +5V
3 TRANSMITTERS LOADED
-6.4
RL = 3kΩ
C1–C4 = 1µF
-6.6
-6.8
160kbits/sec
80kbits/sec
-7.0
20Kkbits/sec
-7.2
-7.4
-7.6
0
500 1000 1500 2000 2500
LOAD CAPACITANCE (pF)
V+, V- WHEN EXITING SHUTDOWN
(1µF CAPACITORS)
MAX220-13
TRANSMITTER SLEW RATE
vs. LOAD CAPACITANCE
12.0
1 TRANSMITTER LOADED TA = +25°C
11.0
VCC = +5V
LOADED, RL = 3kΩ
10.0
C1–C4 = 1µF
9.0
2 TRANSMITTERS
LOADED
8.0
7.0
6.0
3 TRANSMITTERS
LOADED
5.0
4 TRANSMITTERS
LOADED
4.0
0
500 1000 1500 2000 2500
LOAD CAPACITANCE (pF)
TRANSMITTER OUTPUT VOLTAGE (V+, V-)
vs. LOAD CURRENT
10
8
6
TA = +25°C
4
VCC = +5V
C1–C4 = 1µF
2
0
-2
V+ AND V-
EQUALLY
LOADED
V- LOADED,
NO LOAD
ON V+
V+ LOADED,
NO LOAD
ON V-
-4
-6
-8
ALL TRANSMITTERS UNLOADED
-10
0 5 10 15 20 25 30 35 40 45 50
CURRENT (mA)
V+
O
V-
SHDN*
500ms/div
*SHUTDOWN POLARITY IS REVERSED
FOR NON MAX241 PARTS
_______________________________________________________________________________________ 7
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