SiP5630

Features:

Auto Selection of S/E or LVD SCSI Termination
2.7-V to 5.25-V TERMPWR Range
Meets SCSI-1, SCSI-2, SPI-2 (ULTRA-2), SPI-3 (ULTRA-160) and SPI-4 (ULTRA-320) Standards
Differential Failsafe Bias
Thermal Package
On-Chip Thermal Shutdown Circuit
Master/Slave Input
Active Negation
Hot Swap Compatible
Lead (Pb)-Free QSOP-36 Package APPLICATIONS
Disk Array (RAID)
Storage Area Networks (SAN)
Network Attached Storage (NAS)
SCSI Cable
Server and Workstation
Industrial Computers
Pin Compatible with UCC5630 and UCC5670
Lead (Pb)-Free QSOP-36 Package




Application

Disk Array (RAID)
Storage Area Networks (SAN)
Network Attached Storage (NAS)
SCSI Cable
Server and Workstation
Industrial Computers
High-End Personal Computers




Pinout






Specifications

TERMPWR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 V
TXN, TXP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3 to 6 V
MODE, DISABLE, M/S, STATUS . . . . . . . . . . . . . . . . . . . . . ..−0.3 to 6 V
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . .−65 to 125
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .150





Description

The SiP5630 provides active bus termination suitable for all SCSI bus operational modes from SCSI-1 through SPI-4 (Ultra 320). The termination includes impedance matching of the SCSI bus to minimize signal reflections from the end of the bus, as well as required SCSI bus biasing for either S/E (Single Ended) or LVD (LowVoltage Differential) operation.

The SiP5630 has nine (9) output channels (T1-T9). Each output channel provides termination for one SCSI data signal,parity signal or control signal. Two SiP5630 ICs provide completetermination for a narrow SCSI Bus; three ICs provide complete termination for a wide SCSI bus.

The SiP5630 senses the operational state of the SCSI bus via the DIFFSENS bus signal, and automatically switches to S/E or LVD operation as required. It cannot be used on an HPD (High Power Differential) SCSI bus, and goes into high impedance mode when the voltage on the DIFFSENS line indicates HPD operation. The SiP5630 also presents high impedance to the SCSI bus if the DISABLE pin is asserted, or if TERMPWR is removed from the IC.

The SiP5630 is available in a lead (Pb)-free QSOP-36 package for operation over the temperature range of 0 to70.