UC5603

9LINE SCSI ACTIVE TERMINATOR

SLUS195B − MARCH 1997 − REVISED NOVEMBER 2003

2

www.ti.com

description (continued)

Internal circuit trimming is utilized, first to trim the impedance to a 3% tolerance, and then most importantly, to

trim the output current to a 3% tolerance, as close to the max SCSI spec as possible, which maximizes noise

margin in fast SCSI operation.

Other features include negative clamping on all signal lines to protect external circuitry from latch-up, thermal

shutdown and current limit.

This device is offered in low thermal resistance versions of the industry standard 16 pin narrow body SOIC.

connection diagrams

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

LINE7

LINE8

LINE9

N/C

SGND

DISCNCT

LINE1

LINE2

LINE6

LINE5

REG

N/C

N/C

TRMPWR

LINE4

LINE3

N PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

DP PACKAGE

(TOP VIEW)

12, 13 serve as heatsink/ground.

LINE6

LINE5

REG

GND*

GND*

TRMPWR

LINE4

LINE3

LINE7

LINE8

LINE9

GND*

SGND*

DISCNCT

LINE1

LINE2

ORDERING INFORMATION

TA = TJ

Packaged Devices

TA = TJ

DIL -16(N)

SOIC-16 (DP)

{

0

°C to 70°C

UC5603N

UCUC5603DP

† DP (SOIC−16) packages are available taped and reeled. Add TR suffix to device type (e.g.

UC5603DPTR) to order quantities of 2000 devices per reel.