SP3243E EXAR [Exar Corporation], SP3243E Datasheet - Page 7

• Manufacturer Part Number: SP3243E
• Description: 3 Driver/5 Receiver Intelligent +3.0V to +5.5V RS-232 Transceivers
• Manufacturer: EXAR [Exar Corporation]

Figure 9. SP3243E QFN Pinout Configuration
Figure 8. SP3243E Typical Operating Circuit
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
T
T
1
2
R
R
R
R
R
OUT
OUT
4
5
NC
1
2
3
TTL/CMOS
TTL/CMOS
OUTPUTS
IN
IN
IN
IN
IN
INPUTS
To µ P Supervisor
C2
C1
C5
1
2
3
4
5
6
7
8
Circuit
+
+
+
0.1 µ F
0.1 µ F
0.1 µ F
V
CC
12
16
28
24
14
13
20
19
18
17
15
22
23
21
1
2
C1+
C1-
C2+
C2-
T
R
R
R
T
T
R
SHUTDOWN
ONLINE
STATUS
R
R
SP3243E
1
2
3
2
1
2
3
4
5
IN
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
SP3243E
V
7
GND
CC
26
V
25
CC
5kΩ
5kΩ
5kΩ
5kΩ
5kΩ
T
T
T
1
2
3
R
R
R
R
R
OUT
OUT
OUT
3
4
5
V+
1
2
V-
IN
IN
IN
IN
IN
10
11
4
5
7
8
3
6
27
9
C3
C4
24
23
22
21
20
19
18
17
RS-232
OUTPUTS
RS-232
INPUTS
+
+
NC
GND
C1-
ONLINE
SHUTDOWN
STATUS
R
0.1 µ F
0.1 µ F
R
2
1
OUT
OUT
SP3243E_100_072309