+5V INPUT
10
µ
F 6.3V
+5V INPUT
10
µ
F 6.3V
+
+
2
0.1
µ
F
+
6.3V
4
5
C +
1
17
V
CC
C
1
-
C
2
+
C
2
-
+5V to +10V
Voltage Doubler
+10V to -10V
Voltage Inverter
400k
Ω
0.1 µF
16V
3
+
V+
2
17
C +
1
*
0.1 µF
16V
TTL/CMOS INPUTS
0.1
µ
F
+
6.3V
4
5
V
CC
C
1
-
C
2
+
C
2
-
+5V to +10V
Voltage Doubler
+10V to -10V
Voltage Inverter
400k
Ω
V+
0.1
µ
F
16V
3
+
*
16V
0.1
µ
F
+
16V
6
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
V-
7
+
0.1
µ
F
+
16V
6
V-
7
+
0.1
µ
F
RS-232 OUTPUTS
T
1
IN
12
T
1
400k
Ω
15
T
1
OUT
T
1
IN
12
T
1
400k
Ω
15
T
1
OUT
T
2
IN
11
T
2
R
1
5k
Ω
8
T
2
IN
11
T
2
OUT
RS-232 INPUTS
T
2
8
T
2
OUT
R
1
OUT
13
R
1
5k
Ω
R
1
IN
R
2
OUT
10
R
2
5k
Ω
9
R
2
IN
R
2
OUT
10
R
2
5k
Ω
9
R
2
IN
SP310A
GND 16
18
ON/OFF
EN
1
SP312A
GND 16
18
SHUTDOWN
*The negative terminal of the V+ storage capacitor can be tied
to either V
CC
or GND. Connecting the capacitor to V
CC
(+5V)
is recommended.
*The negative terminal of the V+ storage capacitor can be tied
to either V
CC
or GND. Connecting the capacitor to V
CC
(+5V)
is recommended.
Figure 5. Typical Circuits using the SP310A and SP312A
SP231ADS/01
SP231A Enhanced RS-232 Line Drivers/Receivers
© Copyright 2000 Sipex Corporation
7
RS-232 INPUTS
R
1
OUT
13
14
R
1
IN
TTL/CMOS OUTPUTS
14
RS-232 OUTPUTS
SIPEX [ SIPEX CORPORATION ]
