Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (50) 668-707 • www.exar.com

SP320_00_092208

14 DRIN1

61 DRA1

59 DRB1

13 T1IN

58 T1OUT

16 T2IN

54 T2OUT

17 T3IN

47 T3OUT

24 T4IN

51 T4OUT

22 DRIN2

42 DRA2

44 DRB2

15 DRIN3

63 DRA3

65 DRB3

23 STEN

6 TTEN

RCA1 70

RCOUT 1

RCB1 71

RCA2 37

RCOUT2 20

RCB2 38

R1IN 66

R1OUT 80

R2IN 68

R2OUT 78

R3IN 35

R3OUT 19

R4IN 39

R4OUT 21

RCA3 76

RCOUT3 79

RTEN 7

RCB3 77

29, 34, 43, 60, 64, 72

VDD

32

26

30

28

31

C1+

C1-

C2+

C2-

27

VSS

VCC

0.1µF

+5V

25, 33, 41, 62, 73

5kΩ

5kΩ

5kΩ

100Ω

100Ω

400kΩ

Vcc

400kΩ

Vcc

400kΩ

Vcc

400kΩ

Vcc

400kΩ

Vcc

400kΩ

Vcc

400kΩ

Vcc

100Ω

3 TS000

9 ENV35

+5V

5kΩ

+

+

+

+

0.1µF

0.1µF

0.1µF

SP320

• 5Mbps Data Throughput

• +5V-Only, Single Supply Operation

• 3 Drivers, 3 Receivers – V.35

• 4 Drivers, 4 Receivers – RS-232

• 80-pin LQFP Surface Mount Packaging

• Pin Compatible with SP39

RCOUT1 1

NC 2

TS000 3

NC 4

NC 5

TTEN 6

RTEN 7

NC 8

ENV35 9

NC 10

NC 11

NC 12

T1IN 13

DRIN1 14

DRIN3 15

T2IN 16

T3IN 17

NC 18

R3OUT 19

RCOUT2 20

60 GND

59 DRB1

58 T1OUT

57 NC

56 NC

55 NC

54 T2OUT

53 NC

52 NC

51 T4OUT

50 NC

49 NC

48 NC

47 T3OUT

46 NC

45 NC

44 DRB2

43 GND

42 DRA2

SP320

Note: NC (No Connection) pins should be left floating.

Internal signals may be present.

description

The SP320 is a complete V.35 interface transceiver offering 3 drivers and 3 receivers of V.35,

and 4 drivers and 4 receivers of RS-232 (V.28). An Exar patented charge pump allows +5V

only low power operation. RS-232 drivers and receivers are specified to operate at 120kbps,

all V.35 drivers and receivers operate up to 5Mbps.

complete +5V-only V.35 interface

with rs-232 (V.28) control Lines

sp320