11

Date: 7/29/04

SP503 Multiprotocol Transceiver

© Copyright 2004 Sipex Corporation

SP503

+

22µF, 16V

+5V, ±5%

+

22µF

16V

25

27

26

30

28

31

32

22µF

16V

+

+

22µF, 16V

GND

Charge

Pump

V.35 External

Driver Output

Termination Resistors

together. Charge pump capacitors must

be placed as close to the package as

possible.

107Ω

-5V

232Ω

232Ω

107Ω

-5V

232Ω

232Ω

120Ω

50Ω

50Ω

120Ω

50Ω

50Ω

V.35 External

Receiver Input

Termination Resistors

Receiver

Decode

Driver

Decode

Ext.

Latch

1

1

1

0

1

1

1

0

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

200Ω

200Ω

200Ω

200Ω

107Ω

-5V

232Ω

232Ω

200Ω

200Ω

120Ω

50Ω

50Ω

+

Figure 6. Typical Operating Circuit