Power ICs - SiP56xx Family
PRODUCT SHEET
SCSI Bus Active Terminator ICs:
9-, 14-, 15-, and 27-Channel
FEATURES
• Auto selection of S/E or LVD SCSI termination
• Meets SCSI-1, SCSI-2, SPI-2 (ULTRA-2), SPI-3,
(ULTRA-160), and SPI-4 (ULTRA-320) standards
• Differential failsafe bias
• Active negation
• Hot swap compatible
• Integrated SPI-3 mode change delay filter option
APPLICATIONS
• Disk array (RAID)
• Storage area networks (SAN)
• Network attached storage (NAS)
• SCSI cable
• Server and workstation
w w w. v i s h a y. c o m
For more information, visit our web site at www.vishay.com/ref/poweric
Or send E-mail to: Power_IC@vishay.com
SiP56xx Family
Vishay Siliconix
SCSI Bus Active Terminator ICs: 9-, 14-, 15- and 27-Channel
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FEATURE
Auto selection of S/E or LVD SCSI termination
Meets all parallel SCSI standards
On-chip thermal shutdown circuit
Hot swap compatible
Integrated delay filter option
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BENEFIT
Simplifies installation
Fully backwards compatible
Fully protected
No need to power down
Eliminates bulky 4.7-μF low pass filter capacitor
ADDITIONAL FEATURES
• 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)
• Meets SPI-5 (ULTRA-640) standards (SiP5696)
• Differential failsafe bias
• Thermal package
• Master/slave input (SiP5630 and SiP5670)
• Active negation
• Integrated SPI-3 mode change delay filter (SiP5668, SiP5670, and SiP5678)
• Lead (Pb)-free packages
DESCRIPTION
The SiP56xx family provides active bus termination suitable for all SCSI bus operational modes from SCSI-1 through SPI-4 (Ultra 320).
The SiP5696 operates through SPI-5 (Ultra 640). 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 (low-voltage differential)
operation. The SiP56xx senses the operational state of the SCSI bus via the DIFFSENS bus signal, and automatically switches to S/E or
LVD operation as required. The SiP56xx family cannot be used on an HPD (high-power differential) SCSI bus, and goes into high imped-
ance mode when the voltage on the DIFFSENS line indicates HPD operation. The SiP56xx also presents high impedance to the SCSI bus
if the DISABLE pin is asserted, or if TERMPWR is removed from the IC. An optional integrated mode change delay filter eliminates the
need for a bulky 4.7-μF low pass filter capacitor to be compliant with SPI-3 mode change timing requirements.
Devices in the SiP56xx family are available in a lead (Pb)-free package for operation over the temperature range of 0 to +70 ºC.
PRODUCT SELECTION TABLE
SiP5630
Number of lines
Enable active LOW
Operation mode
Integrated SPI-3
delay filter
Master/Slave
Status indicator
SPI-5 and above
Lead (Pb)-free package
Alternate source to
QSOP-36
TI UCC5630A
Maxim DS2118
QSOP-36
TI UCC5670
SQFP-48
TI UCC5628
Maxim DS2127
SQFP-48
Maxim DS2127
SQFP-48
TI UCC5638
Maxim DS2125
SQFP-48
X
X
9
X
Multimode
SiP5670
9
X
Multimode
X
X
X
X
X
X
X
LQFP-80
TI UCC5696
SiP5628
14
X
Multimode
SiP5668
14
X
Multimode
X
SiP5638
15
X
Multimode
SiP5678
15
X
Multimode
X
SiP5696
27
X
LVD only
X
VSA-PT0029-0407
stm32/stm8
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