Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 2

Copyright

© 2002

Rev. 1.2b, 2005-08-29

LX5250/5252

9-Line Multimode SCSI Terminator

TM

®

ABSOLUTE MAXIMUM RATINGS

Operating Junction Temperature ................................................................................150

°C

Storage Temperature Range………………………………………………..-65

°C to 150°C

RoHS / Pb-free Peak Package Solder Reflow Temperature

(40 second maximum exposure)................................................................... 260°C (+0, -5)

Note:

Exceeding these ratings could cause damage to the device. All voltages are with respect to

Ground. Currents are positive into, negative out of specified terminal.

TH ERMAL DATA

DB

36 Pin QSOP

θ

JA

53.9°C/W

PW

28 Pin TSSOP

θ

JA

100°C/W

The

θ

system. All of the above assume no ambient airflow.

θ

depending on mounting technique. (See Application Notes Section: Thermal

considerations)

MASTER/SLAVE FUNCTION TABLE

Master/Slave

DIFFSENSE Status

L*

HI Z

0mA

H

1.3V

10mA Source

Open (Pull-Up)

1.3V

10mA Source

* When in Low state, terminator will sense state of DIFFSENSE line.

PACKAGE PIN OUT

2

3

4

5

6

7

8

9

10

11

12

13

14

1

27

26

25

24

23

22

21

20

19

29

17

16

15

28

1+

1-

2+

2-

HEATSINK

HEATSINK

NC

3+

3-

4+

4-

V

TERM

HVD

LVD

SE

9-

9+

8-

8+

HEATSINK

HEATSINK

HEATSINK

7-

7+

6-

18

35

34

33

32

31

30

36

NC

NC

HEATSINK

5+

5-

DISCONNECT

GND

6+

DIFFB

DIFFSENSE

M/Sb

LX5250/5252

(Top View)

N/C = Not internally connected

NC

2

3

4

5

6

7

8

9

10

11

12

13

14

1

27

26

25

24

23

22

21

20

19

18

17

16

15

28

1+

1-

2+

2-

NC

3+

3-

4+

4-

5+

5-

DISCONNECT

GND

V

TERM

NC

9-

9+

8-

8+

NC

7-

7+

6-

6+

DIFFB

DIFFSENSE

M/Sb

(Top View)

N/C = Not internally connected

RoHS / Pb-free 100% Matte Tin Lead Finish

DIFFSENSE/POWER UP/POWER DOWN FUNCTION TABLE

Outputs

LX5250

DISCONNECT

LX5252

DISCONNECT

DIFFSENSE

Status

Type

Quiescent

Current

L

H

< 0.5V

Enable

SE

55mA

L

H

0.7V – 1.9V

Enable

LVD

35mA

L

H

> 2.4V

Disable

HI-Z

8mA

H or Open

L or Open

X

Disable

HI-Z

10µA