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PDF 73007 Data sheet ( Hoja de datos )
| Número de pieza | 73007 | |
| Descripción | 9-Line SCSI Bus Terminators | |
| Fabricantes | Vishay Siliconix | |
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SiP5630
Vishay Siliconix
9-Line SCSI Bus Terminators
FEATURES
D Auto Selection of S/E or LVD SCSI Termination
D 2.7-V to 5.25-V TERMPWR Range
D Meets SCSI-1, SCSI-2, SPI-2 (ULTRA-2), SPI-3
(ULTRA-160) and SPI-4 (ULTRA-320) Standards
D Differential Failsafe Bias
D Thermal Package
D On-Chip Thermal Shutdown Circuit
D Master/Slave Input
D Active Negation
D Hot Swap Compatible
D Pin Compatible with UCC5630 and UCC5670
D Lead (Pb)-Free QSOP-36 Package
APPLICATIONS
D Disk Array (RAID)
D Storage Area Networks (SAN)
D Network Attached Storage (NAS)
D SCSI Cable
D Server and Workstation
D Industrial Computers
D High-End Personal Computers
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 (Low Voltage 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
complete termination 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 to
70_C.
FUNCTIONAL BLOCK DIAGRAM
HPD
35
MODE 21
Comparators
V t 0.5 = S/E
0.7 t V t1.9 = LVD
V u 2.4 = HPD
DISABLE 17
10 mA
Mode Control And
Enable/Disable
Circuitry
18
GND
8 9 10 26 27 28
Heat Sink GND Pins
LVD S/E TERMPWR
34 33
36
Current Limited
Source/Sink
Regulator
1.3 V
Enable
Current Limited
Source/Sink
Regulator
SCSI
Terminator
Impedance
Circuits
1
REG
20 DIFFS
19 MSTR/SLV
5 T1N
4 T1P
32 T9N
31 T9P
See Functional Diagrams
(Page 6) for detailed descriptions
of SCSI Terminator Impedance
Circuits in LVD and S/E modes of
operation.
Document Number: 73007
S-41263—Rev. A, 05-Ju1-04
www.vishay.com
1
1 page  
New Product
PIN CONFIGURATION AND ORDERING INFORMATION
SiP5630
Vishay Siliconix
REG 1
N/C 2
N/C 3
T1P 4
T1N 5
T2P 6
T2N 7
H/S GND 8
H/S GND 9
H/S GND 10
T3P 11
T3N 12
T4P 13
T4N 14
T5P 15
T5N 16
DISABLE 17
GND 18
SiP5630 (QSOP-36)
Top View
36 TERMPWR
35 HPD
34 LVD
33 S/E
32 T9N
31 T9P
30 T8N
29 T8P
28 H/S GND
27 H/S GND
26 H/S GND
25 T7N
24 T7P
23 T6N
22 T6P
21 MODE
20 DIFFS
19 MSTR/SLV
ORDERING INFORMATION
Part Number
SiP5630CG-T1—E3
Temperature Range
0 to 70_C
Marking
SiP5630CG
PIN DESCRIPTION
Pin Name
1 REG
2, 3 N/C
4, 6, 11, 13,15, 22,
24, 29, 31
TXP; X = 1...9
5, 7, 12, 14, 16, 23,
25, 30, 32
8, 9, 10, 26, 27, 28
TXN; X = 1...9
H/S GND
17 DISABLE
18 GND
19 MSTR/SLV
20 DIFFS
21 MODE
33, 34, 35
36
S/E, LVD, HPD
TERMPWR
Function
SCSI Regulator Output. Connect a 4.7-mF bypass capacitor from this pin to GND.
No Connect.
Positive Terminator Channel Pins. Provide positive signal line termination in LVD operation, and are connected to
GND through low impedance in S/E operation. In HPD, DISABLE, or Power Off condition these pins present high
impedance to the SCSI Bus.
Negative Terminator Channel Pins. Provide negative signal line termination in LVD operation, and line termination for
S/E operation. In HPD, DISABLE, or Power Off condition these pins present high impedance to the SCSI Bus.
Heat Sink Ground. Should be connected to as large a grounded heat sink area on the PC board as is practical.
Chip Disable. There is a small (nominal 10 mA) pull up current on this pin. Pull this pin to GND to enable Bus
Termination. When this pin is left floating or pulled high all SCSI channel pins present high impedance to the SCSI
Bus, and the SCSI Regulator and DIFFSENS regulator are both disabled.
Electrical ground connection for the terminator IC. Connect to the ground lines of the SCSI Bus
Master/Slave. If this pin is tied to TERMPWR the output of the 1.3-V regulator for DIFFSENS is enabled. If this pin is
tied to GND the output of the 1.3-V regulator for DIFFSENS is inhibited.
DIFFSENS Regulator Output. Connect to the DIFFSENS line of the SCSI Bus to bias the mode selection function.
SCSI MODE Select Pin. Connect to the DIFFSENS line of the SCSI Bus to sense the present mode of operation on
the Bus. Decouple MODE from the DIFFSENS signal with a 50-kW/4.7mF low pass filter to meet SPI-3 mode change
requirements.
Status Output Pins. Respective pins are high when the terminator detects the corresponding mode of operation on
the SCSI Bus, and low otherwise.
Power for the Terminator IC. Connect to the TERMPWR lines on the SCSI Bus and decouple with a 4.7-mF capacitor
to GND at the IC.
Document Number: 73007
S-41263—Rev. A, 05-Ju1-04
www.vishay.com
5
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