MAX239 Maxim Integrated Products, MAX239 Datasheet - Page 28

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

+5V-Powered, Multichannel RS-232
Drivers/Receivers
Figure 19. MAX243 Pin Configuration and Typical Operating Circuit
28
______________________________________________________________________________________
TOP VIEW
T2
R2
C1+
C2+
C1-
C2-
OUT
V+
V-
IN
1
2
6
3
4
5
7
8
MAX243
DIP/SO
RECEIVER INPUT
≤ -3 V
OPEN
≥ +3V
16
15
14
13
12
11
10
9
V
GND
T1
R1
R1
T1
T2
R2
CC
R1 OUTPUT
OUT
IN
OUT
IN
IN
OUT
HIGH
HIGH
LOW
R2 OUTPUT
HIGH
LOW
LOW
TTL/CMOS
TTL/CMOS
OUTPUTS
INPUTS
0.1µF
0.1µF
11
10
12
1
3
4
5
9
C1+
C1-
C2+
C2-
T1
T2
R1
R2
IN
IN
OUT
OUT
0.1µF
+5V
+5V
VOLTAGE INVERTER
VOLTAGE DOUBLER
+10V TO -10V
+5V TO +10V
400kΩ
+5V INPUT
400kΩ
GND
V
CC
15
16
5kΩ
5kΩ
T1
T2
ALL CAPACITORS = 0.1µF
0.1µF
R1
R2
OUT
OUT
V+
V-
IN
IN
2
6
14
7
13
8
-10V
+10V
0.1µF
RS-232
OUTPUTS
RS-232
INPUTS