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PDF SS8218 Data sheet ( Hoja de datos )
| Número de pieza | SS8218 | |
| Descripción | Ultra160 Multi-mode LVD/SE SCSI Terminator | |
| Fabricantes | Silicon Standard | |
| Logotipo |  |
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SS8218
Ultra160 Multi-mode LVD/SE SCSI Terminator
Features
Auto-selectable multi-mode Single-Ended
or LVD Termination
Meets SCSI-1, SCSI-2, SCSI-3 SPI Ultra
(Fast-20), Ultra 2(SPI-2 LVD), Ultra160 (SPI-3
LVD) standards.
Supports active negation
3pF channel capacitance
Thermal protection
Hot-swap compatible
5% tolerance on SE and LVD termination
resistance
28 and 36 pin SSOP package
28 Pin SSOP: Pin Compatible with DS2119
36 Pin SSOP: Pin Compatible with DS2118,
LX5241 and UCC5630
Applications
Server and workstation
High-end PC
Industrial PC
Disk Array (RAID)
SCSI cable
General Description
The SS8218 Multi-mode LVD/SE SCSI terminator pro-
vides a smooth transition to the next generation of
the SCSI Parallel Interface (SPI-3). It automatically
senses the bus, via DIFFSENS, and switches the ter-
mination to either single-ended (SE) or low voltage
differential (LVD) SCSI, dependent on which type of
devices are connected to the bus. If the SS8218 de-
tects a HVD SCSI device, it switches to a high imped-
ance state. For a 16-bit Wide SCSI bus to be opera-
tional, three SS8218 terminators are needed.
The Multi-mode terminator contains all functions re-
quired to terminate and auto detect and switch modes
for SCSI Parallel Interface (SPI) bus architectures. For
the SE termination, one regulator and nine precision
110ohm resistors are used. For the LVD termination,
the SS8218 integrates 18 regulated supplies with nine
precision resistor strings.
Pin Configuration
VREF 1
R1+ 2
R1- 3
R2+
R2-
NC/HS GND
R3+
R3-
R4+
4
5
6
7
8
9
R4- 10
R5+ 11
www.DataSheet4U.Rc5o-m 12
DISCNCT 13
GND 14
28 TPWR
27 TPWR
26 R9-
25 NRC9+/HS GND
24 R8-
23 R8+
22 NC/HS GND
21 R7-
20 R7+
19 R6-
18 R6+
17 DIFFB
16 DIFFSENSE
15 M/S
28Pin SSOP/TSSOP
VREF 1
NC 2
NC 3
R1+ 4
R1- 5
R2+ 6
R2- 7
HS/GND 8
HS/GND 9
HS/GND 10
R3+ 11
R3- 12
R4+ 13
R4- 14
R5+ 15
R5- 16
DISCNCT 17
GND 18
36 TPWR
35 HVD
34 LVD
33 SE
32 R9-
31 R9+
30 R8-
29 R8+
28 HS/GND
27 HS/GND
26 HS/GND
25 R7-
24 R7+
23 R6-
22 R6+
21 DIFFB
20 DIFFSENSE
19 M/S
36Pin SSOP
Rev.2.01 6/06/2003
www.SiliconStandard.com
1 of 11
1 page  
SS8218
Recommended Operating Conditions
PARAMETER
Termpower Voltage
Logic 0
Logic 1
Operating Temperature
SYMBOL
Vtpwr (SE)
Vtpwr (LVD)
Vil
Vih
Tamb
MIN
4.0
2.9
-0.3
2.0
0
TYP
5
5
MAX
5.5
5.5
+0.8
Vtpwr+0.3
70
UNITS
V
V
V
°C
Electrical Characteristics
Unless otherwise specified, these specifications apply over the operating ambient temperature range of
0°C≤TA≤70°C.
PARAMETER
LVD Terminator Section
Differential Mode Termination Resistance
Common Mode Termination Resistance
Differential Mode Bias
Common Mode Bias
Single Ended Terminator Section
Output Capacitance
SE Termination Resistance
SE Voltage Reference
SE output Current
Regulator Section
Line Regulation
Load Regulation
Current Limit
Sink Current
DC Section
Termpower Current
Input Leakage High
Input Leakage Low
Output Current High
Output Current Low
DIFFSENS Section
DIFFSENS SE Operating Range
DIFFSENS LVD Operating Range
DIFFSENS HVD Operating Range
DIFFSENSE Driver Output Voltage
DIFFSENSE Driver Source Current
DIFFSENSE Driver Sink Current
www.DNaotatSeh: eGeut4aUra.cnotmeed by Design.
SYMBOL
Condition
Rdm
Rcm
Vdm
Vcm
All lines Open
Cout
Rse
Vref
Iose
Note
Vline = 0-3.0 volts
Vline = 0.2 volts
LIREG
LOREG
ILIM
ISINK
SE mode (No Load)
Itpmr LVD mode (No Load)
Iih
Iil
Ioh Vout = 2.4 volts;SE/LVD/HVD Pins only
Iol Vout=0.4 volts;SE/LVD/HVD Pins only
Vseor
Vlvdor
Vhvdor
Vdso
Idsh
Idsl
M/S=1; Ids = 0-5mA
M/S = 1; Vdso=0V
M/S=1; Vdso=2.75V
MIN TYP MAX UNITS
100
110
100
1.125
105
150
112
1.25
110
190
125
1.375
Ohms
Ohms
mV
V
104.5 110
2.79 2.85
3
115.5
2.93
25.4
pF
Ohms
Volts
mA
1.0
1.3
350
200
2.5
3.5
%
%
mA
mA
4
mA
20
-1.0 µA
1.0 µA
-1.0 mA
4.0 mA
-0.3 0.5 V
0.7 1.9 V
2.4 Vtpwr+0.3 V
1.2 1.4 V
5 15 mA
20 200 µA
Rev.2.01 6/06/2003
www.SiliconStandard.com
5 of 11
5 Page 
SS8218
28 pin TSSOP
28
D
C
L
E1 E
1
θ
A2 A
A1
e
b
NOTE:
1. Package body sizes exclude mold flash protrusions or gate burrs
2. Tolerance ±0.1mm unless otherwise specified
3. Coplanarity : 0.1mm
4. Controlling dimension is in millimeter. Converted inch dimensions are not necessarily accurate.
5. Follow JEDEC MO-153
SYMBOL
A
A1
A2
b
C
D
E
E1
e
L
y
θ
MIN.
-----
0.05
0.80
0.19
0.09
9.60
-----
4.30
-----
0.45
-----
0º
DIMENSION IN MM
NOM.
-----
-----
1.00
-----
-----
9.70
6.40
4.40
0.65
0.60
-----
-----
MAX.
1.20
0.15
1.05
0.30
0.20
9.80
-----
4.50
-----
0.75
0.10
8º
MIN.
-----
0.002
0.031
0.007
0.004
0.378
-----
0.169
-----
0.018
-----
0º
DIMENSION IN INCH
NOM.
-----
-----
0.039
-----
-----
0.382
0.252
0.173
0.026
0.024
-----
-----
MAX.
0.048
0.006
0.041
0.012
0.008
0.386
-----
0.177
-----
0.030
0.004
8º
Information furnished by Silicon Standard Corporation is believed to be accurate and reliable. However, Silicon Standard Corporation makes no
guarantee or warranty, express or implied, as to the reliability, accuracy, timeliness or completeness of such information and assumes no
responsibility for its use, or for infringement of any patent or other intellectual property rights of third parties that may result from its
use. Silicon Standard reserves the right to make changes as it deems necessary to any products described herein for any reason, including
wwwthwiet.huDosauettoalfiSmahnietyeattpi4roUond.eucnochtmsadnecsecmriebnetdinherreeliinaboirlittoy,thfuenucsteioonfaalintyy
or design. No license
information provided
is granted, whether expressly or
herein, under any patent or other
by implication, in relation
intellectual property rights
to
of
Silicon Standard Corporation or any third parties.
Rev.2.01 6/06/2003
www.SiliconStandard.com
11 of 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SS8218.PDF ] | |
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