MAX239 Maxim Integrated Products, MAX239 Datasheet - Page 21

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

Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit
Figure 12. MAX234 Pin Configuration and Typical Operating Circuit
( ) ARE FOR SO PACKAGE ONLY.
TOP VIEW
TOP VIEW
(V+) C1+
(V-) CS-
______________________________________________________________________________________
R1
T1
T1
T2
GND
GND
GND
T2
T1
R1
T2
T1
C1+
V
V
OUT
OUT
OUT
OUT
V+
CC
CC
IN
IN
IN
IN
IN
10
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
MAX233A
DIP/SO
MAX233
MAX234
DIP/SO
+5V-Powered, Multichannel RS-232
20
19
18
17
16
15
14
13
12
11
16
15
14
13
12
11
10
9
R2
C2-
C2+
C1- (C1+)
V- (C2+)
C2+ (C2-)
R2
T2
V-
V+ (C1-)
T3
T4
T4
T3
V-
C2-
C2+
C1-
OUT
OUT
IN
OUT
OUT
IN
IN
CONNECTIONS TO
POWER SUPPLY
POWER SUPPLY
INTERNAL +10V
DO NOT MAKE
INTERNAL -10
TTL/CMOS
THESE PINS
TTL/CMOS
TTL/CMOS
OUTPUTS
INPUTS
INPUTS
1.0µF
1.0µF
13 (14)
12 (10)
8 (13)
14 (8)
10
11
13
14
2
1
20
17
3
7
9
4
3
T1
R2
C1+
C1-
C2+
C2-
T2
R1
C1+
C1-
V-
V-
V+
T1
T2
T3
T4
IN
IN
OUT
OUT
IN
IN
IN
IN
Drivers/Receivers
+5V
+5V
1.0µF
1.0µF
+5V
+5V
+5V
+5V
VOLTAGE INVERTER
VOLTAGE DOUBLER
GND
400kΩ
400kΩ
6
+10V TO -10V
+5V TO +10V
400kΩ
400kΩ
400kΩ
400kΩ
+5V INPUT
GND
+5V INPUT
V
V
CC
CC
6
5
7
GND
T1
T2
T4
T3
9
5kΩ
5kΩ
T1
T2
T3
T4
T1
T2
OUT
OUT
OUT
OUT
V-
R1
V+
R2
OUT
OUT
C2+
C2+
C2-
C2-
IN
IN
1
3
16
15
8
12
5
4
11 (12)
15
16
10 (11)
18
19
1.0µF
1.0µF
RS-232
OUTPUTS
RS-232
OUTPUTS
RS-232
OUTPUTS
21