6
4
Vout+
Vout-
2
0
-2
-4
-6
Load Current Per Transmitter [mA]
Figure 26. SP3243EB Driver Output Voltages vs. Load
Current per Transmitter
V
CC
+
26
0.1µF
0.1µF
C5
C1
VCC
28
27
3
C1+
V+
V-
+
+
+
C3
C4
0.1µF
0.1µF
24
1
C1-
SP3243EB
C2+
+
C2
0.1µF
2
14
13
C2-
T1IN
T1OUT
T2OUT
T3OUT
9
T2IN
T3IN
10
11
12
R2OUT
R1OUT
20
19
R1IN
R2IN
R3IN
R4IN
R5IN
4
5
5kΩ
R2OUT
R3OUT
R4OUT
R5OUT
18
17
16
15
5kΩ
6
7
8
5kΩ
5kΩ
5kΩ
DB-9
Connector
V
CC
22
23
SHUTDOWN
ONLINE
1
2
3
4
5
6
To µP Supervisor
21
STATUS
Circuit
GND
25
7
8
9
DB-9 Connector Pins:
1. Received Line Signal Detector
2. Received Data
6. DCE Ready
7. Request to Send
8. Clear to Send
9. Ring Indicator
3. Transmitted Data
4. Data Terminal Ready
5. Signal Ground (Common)
Figure 27. Circuit for the connectivity of the SP3243EB with a DB-9 connector
Date: 6/2/04
SP3223EB/3243EB +3.0V to +5.5V RS-232 Transceivers
© Copyright 2004 Sipex Corporation
15
SIPEX [ SIPEX CORPORATION ]
