|
|
PDF DS2114 Data sheet ( Hoja de datos )
| Número de pieza | DS2114 | |
| Descripción | SCSI Terminator | |
| Fabricantes | Dallas Semiconducotr | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de DS2114 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
DS2114
DS2114
SCSI Terminator
FEATURES
• Fully compliant with SCSI, SCSI–2 and SCSI–3 stan-
dards
• Provides active termination for nine signal lines
• Laser–trimmed 110 ohms termination resistors have
2% tolerance
• Low dropout voltage regulator
• Fully supports actively negated SCSI signals
• Onboard thermal shutdown circuitry
• Narrow 16–pin plastic SOIC (DS2114Z)
PIN ASSIGNMENT
TERMPWR1
R1
1
2
16 NC
15 VREF2
R2 3
14 R9
R3 4
13 R8
R4 5
12 R7
R5 6
11 R6
VREF1
7
10 NC
GND
8
9 TERMPWR2
DS2114Z 16–PIN SOIC (150 MIL)
DESCRIPTION
The SCSI–2 and SCSI–3 standards recommend the
use of active terminations at both ends of every cable
segment in a SCSI system with single–ended drivers
and receivers. The DS2114 SCSI Terminator, which is
fully compliant with these standards, enables the de-
signer to gain the benefits of active termination: greater
immunity to voltage drops on the TERMPWR (TER-
Mination PoWeR) line, enhanced high–level noise im-
munity, intrinsic TERMPWR decoupling, and very low
quiescent current consumption. The DS2114 integrates
a regulator and nine precise 110 ohms termination re-
sistors into a monolithic IC. The DS2114 is intended for
cable end terminator assemblies and devices where the
terminators do not need to be isolated from the SCSI
bus.
070198 1/6
1 page  
DS2114
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
–1.0V to +7.0V
0°C to 70°C
–55°C to +125°C
260°C for 10 seconds
* This is a stress rating only and functional operation of the device at these or any other conditions above
those indicated in the operation sections of this specification is not implied. Exposure to absolute maxi-
mum rating conditions for extended periods of time may affect reliability.
The Dallas Semiconductor DS2114 is built to the highest quality standards and manufactured for long term reliability.
All Dallas Semiconductor devices are made using the same quality materials and manufacturing methods. However,
the DS2114 is not exposed to environmental stresses, such as burn–in, that some industrial applications require. For
specific reliability information on this product, please contact the factory in Dallas at (972) 371–4448.
RECOMMENDED OPERATING CONDITIONS
(0°C to 70°C)
PARAMETER
SYMBOL MIN
TYP
MAX
UNITS NOTES
TERMPWR Voltage
VTP 4.00
5.50 V
DC CHARACTERISTICS
PARAMETER
TERMPWR Current
Termination Resistance
Die Thermal Shutdown
Termination Capacitance
SYMBOL
ITP
ITP
RTERM
TSD
CT
MIN
110
150
(0°C to 70°C)
TYP
MAX
UNITS NOTES
250 mA 1, 3
5 8 mA 1, 4
116
ohms
1, 2
°C 1, 5
5.0 pF 1, 2, 5
REGULATOR CHARACTERISTICS
(0°C to 70°C)
PARAMETER
SYMBOL MIN
TYP
MAX
UNITS NOTES
Output Voltage
Drop Out Voltage
Line Regulation
Output Current
Load Regulation
Current Limit
Sink Current
VREF
2.7
2.85
3.0
V 1, 2
VDROP
0.75 1.0
V 3, 5
LIREG
1.0 2.0 % 1, 4
IOUT
24.0 mA
6
LOREG
1.3 3.0 % 1, 3
ILIM 280
500 mA
1
ISINK
200
mA 1
NOTES:
1. 4.00 volts < TERMPWR < 5.50 volts.
2. 0.0 volts < signal lines < TERMPWR.
3. All signal lines = 0.0 volts.
4. All signal lines open.
5. Guaranteed by design; not production tested.
6. VSIGNAL = 0.2V.
070198 5/6
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet DS2114.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DS2110 | Plug and Play SCSI Terminator |  Dallas Semiconductor |
| DS2114 | SCSI Terminator | Dallas Semiconducotr |
| DS2117M | Ultra3 LVD/SE SCSI Terminator | Dallas Semiconductor |
| DS2118M | Ultra2 LVD/SE SCSI Terminator | Dallas Semiconducotr |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |