SP3243 SIPEX [Sipex Corporation], SP3243 Datasheet - Page 15

• Manufacturer Part Number: SP3243
• Description: Intelligent +3.0V to +5.5V RS-232 Transceivers
• Manufacturer: SIPEX [Sipex Corporation]

Figure 21. SP3243 Driver Output Voltages vs. Load
Current per Transmitter
Figure 22. Circuit for the connectivity of the SP3243 with a DB-9 connector
Rev. 6/30/03
-2
-4
-6
6
4
2
0
Load Current Per Transmitter [mA]
To µP Supervisor
C2
C1
C5
DB-9 Connector Pins:
1. Received Line Signal Detector
2. Received Data
3. Transmitted Data
4. Data Terminal Ready
5. Signal Ground (Common)
Circuit
+
+
+
0.1µF
0.1µF
0.1µF
V
CC
24
14
13
12
20
19
16
15
22
21
28
18
17
23
1
2
C1+
C1-
C2+
C2-
R
R
R
T
T
T
STATUS
R
R
SHUTDOWN
ONLINE
R
1
2
3
2
1
2
3
4
IN
5
IN
IN
OUT
OUT
OUT
OUT
OUT
OUT
SP3243
V
GND
Vout+
Vout-
CC
SP3223 +3.0V to +5.5V RS-232 Transceivers
26
25
5KΩ
5KΩ
5KΩ
5KΩ
5KΩ
T
T
V
T
1
2
3
R
CC
R
R
R
R
6. DCE Ready
7. Request to Send
8. Clear to Send
9. Ring Indicator
OUT
OUT
OUT
5
V+
1
2
3
4
V-
IN
IN
IN
IN
IN
10
4
11
5
7
8
15
27
3
9
6
C3
C4
+
+
0.1µF
0.1µF
8
9
6
7
Connector
DB-9
© Copyright 2003 Sipex Corporation
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