DS21S087A

3 of 8

Figure 2. Typical Differential SCSI Bus Configuration

NOTE 1: C1 = 4.7

µF TANTALUM CAPACITOR; C2 = 2.2µF TANTALUM OR 4.7µF ALUMINUM CAPACITOR.

NOTE 2: IF THE DS21S07A IS TO BE EMBEDDED INTO A PERIPHERAL THAT WILL ACT AS A TARGET

ON A SCSI BUS, IT IS RECOMMENDED THAT TERMPWR BE DERIVED FROM THE SCSI CABLE, NOT

GENERATED LOCALLY. IN THIS CONFIGURATION, IF A POWER FAILURE OCCURS IN THE

PERIPHERAL, IT WILL NOT AFFECT THE BUS.

NOTE 3: A HIGH-FREQUENCY BYPASS CAPACITOR (0.1

µF RECOMMENDED) CAN BE ADDED IN

PARALLEL TO C1 FOR APPLICATIONS USING FAST RISE/FALL TIME DRIVERS.