![](http://datasheet.mmic.net.cn/Exar-Corporation/SP503EM-L_datasheet_99749/SP503EM-L_11.png)
11
SP503_101_101508
SP503 Multiprotocol Transceiver
Copyright 2008 Exar Corporation
SP503
+
22F, 16V
22F (VCC decoupling)
+5V, ±5%
+
22F
16V
25
27
26
30
28
31
32
22F
16V
+
22F, 16V
VCC
VDD
C1+
C1–
C2+
C2–
VSS
GND
Charge
Pump
V.35 External
Driver Output
Termination Resistors
All VCC connections can be tied
together. Charge pump capacitors must
be placed as close to the package as
possible.
107
-5V
232
232
107
-5V
232
232
120
50
50
120
50
50
V.35 External
Receiver Input
Termination Resistors
Receiver
Decode
Driver
Decode
Ext.
Latch
1
0
1
0
V.35
MODE
Control
Word
Note: An external voltage of -5V, ±5% is needed for the driver output termination resistors.
These V.35 termination resistors comply with all the parameters specified in CCITT
Recommendation V.35. For other termination configurations, please consult factory.
IN5819
200
200
200
200
107
-5V
232
232
200
200
120
50
50
+
Figure 6. Typical Operating Circuit