SP503 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'SP503' PDF : 28 Pages View PDF
+5V, ±5%
IN5819
22µF +
16V
22µF +
16V
22µF (VCC decoupling)
+
+
All VCC connections can be tied
together. Charge pump capacitors must
27 22µF, 16V 25
be placed as close to the package as
possible.
VDD
26 C1+
VCC
200Ω
232Ω
-5V 107Ω
30 C1–Charge
28
Pump
C2+
31 C2–
232Ω
200Ω
200Ω
232Ω
V.35 External
Driver Output
Termination Resistors
-5V 107Ω
232Ω
+
32 VSS GND
200Ω
22µF, 16V
SP503
1
1
1
0
Ext.
Latch
1
1
1
0
Driver
Decode
Receiver
Decode
200Ω
232Ω
-5V
107Ω
232Ω
200Ω
50Ω
120Ω
50Ω
V.35 External
Receiver Input
Termination Resistors
50Ω
120Ω
50Ω
50Ω
120Ω
50Ω
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.
Figure 6. Typical Operating Circuit
SP503_101_101508
SP503 Multiprotocol Transceiver
11
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