SP505 View Datasheet(PDF) - Exar Corporation

Part Name

Description

Manufacturer

SP505

WAN Multi-Mode Serial Transceiver

Exar Corporation 

MODE: RS-422 (w/ termination)

DRIVER/RECEIVER

DEC3 DEC2 DEC1 DEC0

010

0

RD(a) 70

RxD 1

RD(b) 71

RT(a) 37

RxC 20

RT(b) 38

CS(a) 66

CTS 80

CS(b) 67

DM(a) 68

DSR 78

DM(b) 69

RR(a) 35

DCD 19

RR(b) 36

IC(a) 39

RI 21

IC(b) 40

SCT(a) 76

SCT 79

SCTEN 7

SCT(b) 77

RECEIVERS DRIVERS

14 TxD

61 SD(a)

59 SD(b)

2 SDEN

13 DTR

58 TR(a)

56 TR(b)

3 TREN

16 RTS

54 RS(a)

52 RS(b)

4 RSEN

17 RL

47 RL(a)

45 RL(b)

18 RLEN

24 LL

51 LL(a)

49 LL(b)

5 LLEN

22 ST

42 ST(a)

44 ST(b)

23 STEN

15 TxC

63 TT(a)

65 TT(b)

6 TTEN

Figure 55. Mode Diagram — RS-422

Exar Coporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • Fax (510) 668-7017 • www.exar.com

27

SP505_100_081308

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