DS2114

SCSI Terminator

DS2114

070198 1/6

FEATURES

dards

2% tolerance

PIN ASSIGNMENT

1

2

3

4

5

6

7

8

9

DS2114Z 16–PIN SOIC (150 MIL)

TERMPWR1

R1

R2

R3

R4

R5

VREF1

GND

NC

VREF2

R9

R8

R7

R6

NC

TERMPWR2

11

12

13

14

15

16

10

DESCRIPTION

The SCSI–2 and SCSI–3 standards recommend the

use of active terminations at both ends of every cable

segment in a SCSI system with single–ended drivers

and receivers. The DS2114 SCSI Terminator, which is

fully compliant with these standards, enables the de-

signer to gain the benefits of active termination: greater

immunity to voltage drops on the TERMPWR (TER-

Mination PoWeR) line, enhanced high–level noise im-

munity, intrinsic TERMPWR decoupling, and very low

quiescent current consumption. The DS2114 integrates

a regulator and nine precise 110 ohms termination re-

sistors into a monolithic IC. The DS2114 is intended for

cable end terminator assemblies and devices where the

terminators do not need to be isolated from the SCSI

bus.