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Microsemi Corporation - 9-LINE LOW CAPACITANCE/ POWER SCSI TERMINATOR

Numéro de référence LX5107
Description 9-LINE LOW CAPACITANCE/ POWER SCSI TERMINATOR
Fabricant Microsemi Corporation 
Logo Microsemi Corporation 





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LX5107 fiche technique
T H E I N F I N I T E P O W E R O F I N N O VAT I O N
L I N D O C #: 5107
LX5107
9-LINE LOW CAPACITANCE, µPOWER SCSI TERMINATOR
PR O D U C T I O N D ATA S H E E T
DESCRIPTION
The LX5107 is a nine-line active terminator
for the SCSI parallel bus. This SCSI stan-
dard recommends active termination at
both ends of the SCSI bus.
During disconnect mode, the LX5107
requires a meager 30µA of supply current
while offering only 3.0pF of output capaci-
tance. To enter this low-power mode, the
disconnect pin should be driven low
thereby disconnecting the terminating re-
sistors and placing the internal low drop-
out regulator into low-power mode. In
disconnect mode, each termination line
presents a high impedance to the SCSI bus
with the overall effect being to preserve
high signal integrity and yield subsequent
reliable, error free communications.
During normal operation, the LX5107
consumes only 600µA of current which is
the lowest enabled supply current of any
terminator available on the market today.
Linfinity's proprietary BiCMOS low drop-
out regulator architecture enables this
unique and very efficient operating char-
acteristic.
The LX5107 also offers a precisely
trimmed channel output current specified
to a 5% tolerance. The maximum value
of the output current is trimmed as closely
as possible to the SCSI standard maximum
specification to give the highest possible
noise margin for fast SCSI operation. In
addition, the LX5107 sinks up to 50mA of
current making it compatible with today's
fast active negation drivers.
The LX5107 is a superior, pin-for-pin
replacement for a variety of industry prod-
ucts such as the DS2107S and DS21S07A.
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
KEY FEATURES
s 3.0pF OUTPUT CAPACITANCE DURING
DISCONNECT
s 30µA SUPPLY CURRENT IN DISCONNECT
MODE
s 600µA SUPPLY CURRENT DURING NORMAL
OPERATION
s 50mA SINK CURRENT FOR ACTIVE
NEGATION
s LOGIC COMMAND DISCONNECTS ALL
TERMINATION LINES
s CURRENT LIMIT AND THERMAL PROTECTION
s COMPATIBLE WITH SCSI 1, 2 AND 3
STANDARDS
s MEETS SCSI HOT PLUGGING CAPABILITY
s CONSULT FACTORY FOR APPLICATION TEST
REPORT: 5107TR
PRODUCT HIGHLIGHT
R E C E I V I N G W AV E F O R M - 1 0 M H Z
D R I V I N G W AV E F O R M - 1 0 M H Z
Copyright © 1997
Rev. 1.2 11/97
Receiver
Driver
LX5107
1 Meter, AWG 28
LX5107
LX5268
LX5268
PACKAGE ORDER INFORMATION
TJ (°C)
DW
Plastic
16-pin
SOWB
PWP
Plastic TSSOP
20-pin, Power
0 to 70
LX5107CDW
LX5107CPWP
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX5107CDWT)
NOTE:
For An In-Depth
Discussion On Applying
SCSI, Request Linfinity
Application Note:
"Understanding The
Single-Ended SCSI Bus"
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1

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