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UCC5614 Datasheet(PDF) 2 Page - Texas Instruments

Part No. UCC5614
Description  9-Line 3-5 Volt Low Capacitance SCSI Active Terminator
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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UCC5614 Datasheet(HTML) 2 Page - Texas Instruments

   
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UCC5614
The power amplifier output stage allows the UCC5614 to
source full termination current and sink active negation
current when all termination lines are actively negated.
The UCC5614 is pin for pin compatible with Unitrode’s
other 9 line SCSI terminators, allowing lower capacitance
and lower voltage upgrades to existing systems. The
UCC5614, as with all Unitrode terminators, is completely
hot pluggable and appears as high impedance at the ter-
minating channels with VTRMPWR = 0V or open.
Internal circuit trimming is utilized, first to trim the 110
ohm termination impedance to a 7% tolerance, and then
most importantly, to trim the output current to a 4% toler-
ance, as close to the max SCSI-3 spec as possible,
which maximizes noise margin in fast SCSI operation.
Other features include thermal shutdown and current
limit.
This device is offered in low thermal resistance versions
of the industry standard 16 pin narrow body SOIC, 16 pin
ZIP (Zig-Zag In Line package), 24 pin TSSOP and 28 pin
PLCC.
ABSOLUTE MAXIMUM RATINGS
Termpwr Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V
Signal Line Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +7V
Regulator Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6A
Storage Temperature . . . . . . . . . . . . . . . . . . .
−−65°C to +150°C
Operating Temperature . . . . . . . . . . . . . . . . .
−−55°C to +150°C
Lead Temperature (Soldering, 10 Sec.) . . . . . . . . . . . . . +300°C
RECOMMENDED OPERATING CONDITIONS
Termpwr Voltage . . . . . . . . . . . . . . . . . . . . . . . . . 2.7V to 5.25V
Signal Line Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . 0V to +5V
Disconnect Input Voltage . . . . . . . . . . . . . . . . . . 0V to Termpwr
Description Continued
Unless otherwise specified all voltages are with respect to
Ground. Currents are positive into, negative out of the speci-
fied terminal.
Consult Packaging Section of Unitrode Integrated Circuits dat-
abook for thermal limitations and considerations of packages.
CONNECTION DIAGRAMS
DIL-16 (Top View)
N or J Package
ZIP-16 (Top View)
Z Package
Note: Drawings are not to scale.
2


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