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SP503_101_101508

SP503 Multiprotocol Transceiver

© Copyright 2008 Exar Corporation

■ Single Chip Programmable Serial

Transceiver

■ Seven (7) Drivers and Seven (7)

Receivers

■ Software-Selectable Industry Standard

Protocols:

— RS-232 (V.28)

— EIA-530

— RS-449

— RS-422A (V.11, X.27)

— RS-485

— V.35

■ Independant Driver and Receiver Mode

Selection

■ +5V Single Power Supply Operation

■ Surface Mount Packaging

SP503

Charge

Pump

Receiver

Decode

Driver

Decode

Receivers

Drivers

DESCRIPTION

The SP503 is a highly integrated serial transceiver that allows software control of its interface

modes. It offers hardware interface modes for RS-232 (V.28), RS-422A (V.11), RS-449, RS-485,

V.35, and EIA-530. The SP503 is fabricated using low–power BiCMOS process technology, and

incorporates a Exar patented (5,306,954) charge pump allowing +5V only operation.

Now Available in Lead Free Packaging

RxD 1

TTEN 6

SCTEN 7

DTR 13

TxD 14

TxC 15

RTS 16

RL 17

NC 18

DCD 19

RxC 20

60 GND

59 SD(b)

58 TR(a)

57 GND

56 TR(b)

54 RS(a)

53 GND

52 RS(b)

51 LL(a)

50 GND

49 LL(b)

47 RL(a)

46 GND

45 RL(b)

44 ST(b)

43 GND

42 ST(a)

SP503

SP503

Multiprotocol Transceiver