sip5668cs Vishay, sip5668cs Datasheet

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sip5668cs

Manufacturer Part Number
sip5668cs
Description
Sip5668 - 14-line Scsi Bus Terminators
Manufacturer
Vishay
Datasheet

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Part Number:
sip5668cs-TR-E3
Manufacturer:
Vishay Siliconix
Quantity:
10 000
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DESCRIPTION
The SiP5668 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.
An integrated mode change delay filter in the SIP5668
eliminates the need for a bulky 4.7-mF low pass filter capacitor
to be compliant with SPI-3 mode change timing requirements.
The SiP5668 has fourteen (14) output channels (T1−T14).
Each output channel provides termination for one SCSI data
Document Number: 73099
S-41843—Rev. A, 11-Oct-04
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
D Integrated SPI-3 Mode Change Delay Filter
D Bus Mode Status Pins
D Differential Failsafe Bias
D Thermal Package
D On-Chip Thermal Shutdown Circuit
D Active Negation
D Hot Swap Compatible
FUNCTIONAL BLOCK DIAGRAM
MODE
(ULTRA-160) and SPI-4 (ULTRA-320) Standards
34
36
GND
25
10 mA
4
0.7 t V t1.9 = LVD
Comparators
Delay Filter
Mode Control And
V u 2.4 = HPD
Enable/Disable
Heat Sink GND Pins
V t 0.5 = S/E
and
9
Circuitry
14-Line SCSI Bus Terminators
28
33
LVD
Current Limited
27
Source/Sink
New Product
Regulator
S/E
26
REG
10
TERMPWR
D Pin Compatible with UCC5628
D Lead (Pb)-Free SQFP-48 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
signal, parity signal or control signal. Two SiP5668 ICs provide
complete termination for a wide SCSI bus.
The SiP5668 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 SiP5668 also presents high
impedance to the SCSI bus if the DISABLE pin is asserted, or
if TERMPWR is removed from the IC.
The SiP5668 is available in a lead (Pb)-free SQFP-48 package
for operation over the temperature range of 0 to 70 _C.
3
Impedance
Terminator
1.3 V
Circuits
SCSI
Current Limited
Source/Sink
Regulator
35
48
47
2
1
DIFFS
T1N
T1P
T14N
T14P
See
(Page 6) for detailed descriptions
of SCSI Terminator Impedance
Circuits in LVD and S/E modes of
operation.
Vishay Siliconix
Functional Diagrams
SiP5668
www.vishay.com
1

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sip5668cs Summary of contents

Page 1

... LVD S/E TERMPWR 1.3 V Current Limited Source/Sink Regulator SCSI Terminator Impedance Circuits REG SiP5668 Vishay Siliconix Current Limited Source/Sink Regulator 35 DIFFS 2 T1N 1 T1P 48 T14N 47 T14P See Functional Diagrams (Page 6) for detailed descriptions of SCSI Terminator Impedance Circuits in LVD and S/E modes of operation. ...

Page 2

... SiP5668 Vishay Siliconix TYPICAL APPLICATION DIAGRAM SiP5668 TERMPWR DISABLE REG 4.7 mF GND MODE 0.1 mF 4.7 mF SiP5668 TERMPWR DISABLE REG 4.7 mF GND MODE Group 1 Signals: DB(0), DB(1), DB(2), DB(3), DB(4), DB(5), DB(6), DB(7), DB(P), DB(12), DB(13), DB(14), DB(15), DB(P1) Group 2 Signals: ATN, BSY, ACK, RST, MSG, SEL, C/D, REQ, I/O, DB(8), DB(9), DB(10), DB(11) www.vishay.com 2 New Product SCSI BUS TERMPWR T1N T1P Group 1 Signals T14N ...

Page 3

... DIFFS V = 2.75 V DIFFS REG REG 1.2 V DISABLE V u 1.2 V DISABLE SiP5668 Vishay Siliconix −65 to 125 _C 150 Limits Min Typ Max Unit 100 105 110 W W 120 140 160 100 ...

Page 4

... SiP5668 Vishay Siliconix SPECIFICATIONS Parameter Symbol MODE Input S/E to LVD Threshold V TH(S/E) LVD to HPD Threshold V TH(HPD) Input Current I IN(MODE) Mode Change Delay t DEL STATUS Output Pins (LVD, S/E) Source Current I SO(STAT) Sink Current I SI(STAT) THERMAL Shutdown d Shutdown Temperature T OFF d Hysteresis T HYS TERMPWR Supply LVD Mode ...

Page 5

... SiP5668 (SQFP-48 Top View ORDERING INFORMATION Temperature Range 0 to 70_C SiP5668CS Function SiP5668 Vishay Siliconix T14N T14P T13N T13P T12N T12P T11N T11P T10N T10P T9N T9P Marking www.vishay.com 5 ...

Page 6

... SiP5668 Vishay Siliconix FUNCTIONAL BLOCK DIAGRAM LVD OPERATION Comparators V t 0.5 = S/E 34 MODE 0 t1.9 = LVD V u 2.4 = HPD 10 mA Mode Control And Enable/Disable 36 DISABLE Circuitry FUNCTIONAL BLOCK DIAGRAM S/E OPERATION Comparators V t 0.5 = S/E 34 MODE 0 t1.9 = LVD V u 2.4 = HPD 10 mA Mode Control And Enable/Disable 36 DISABLE Circuitry www.vishay.com ...

Page 7

... Mbyte/sec data transfer. Top panel DB10 T- and T+ signals. Bottom panel DB9 T− and T+ signals. All bits except DB9 toggling at maximum data rate. TEMPWR = 5. ns/div S/E WAVEFORMS 40 Mbyte/sec data transfer. Top panel DB10 T- signals. Bottom panel DB9 T− signals. TEMPWR = 5. ns/div Document Number: 73099 S-41843—Rev. A, 11-Oct-04 New Product TEMPWR = 2.70 V TEMPWR = 2. ns/div SiP5668 Vishay Siliconix 5 ns/div www.vishay.com 7 ...

Page 8

... SiP5668 Vishay Siliconix LVD TYPICAL CHARACTERISTICS Differential Impedance vs. TERMPWR 110 0_C 108 25_C 70_C 106 104 102 100 2.5 3.0 3.5 4.0 Differential Fail-Safe Bias vs. TERMPWR 125 0_C 120 25_C 70_C 115 110 105 100 2.5 3.0 3.5 4.0 TERMPWR (V) Common Mode Bias vs. TERMPWR 1.30 1.29 0_C 25_C 1.28 70_C 1.27 1.26 1.25 1.24 1.23 1.22 1.21 1.20 2.5 3.0 3.5 4.0 TERMPWR (V) www.vishay.com ...

Page 9

... SiP5668 Vishay Siliconix Impedance vs. Temperature TERMPWR 5.25 V 3 Temperature (_C) Output Current @ 0.2 V vs. Temperature TERMPWR 5.25 V 3 Temperature (_C) Bias vs. Temperature 3.0 TERMPWR 5 ...

Page 10

... On power up, the SiP5668 initially defaults to a high impedance state on the termination pins. If the MODE pin Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations. ...

Page 11

... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...

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