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PDF LX5205 Data sheet ( Hoja de datos )
| Número de pieza | LX5205 | |
| Descripción | 18-LINE PLUG AND PLAY/ POWER SCSI TERMINATOR | |
| Fabricantes | Microsemi Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LX5205 (archivo pdf) en la parte inferior de esta página. Total 4 Páginas | ||
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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 #: 5205
LX5205
18-LINE PLUG AND PLAY, µPOWER SCSI TERMINATOR
P R E L I M I N A RY D ATA S H E E T
DESCRIPTION
KEY FEATURES
The LX5205 is an eighteen line active ter-
minator for the SCSI parallel bus. This SCSI
standard recommends active termination at
both ends of the SCSI bus.
During disconnect mode, the LX5205
requires a meager 500nA of supply current
while offering only 2.5pF of output capaci-
tance. To enter this low power mode, the
disconnect pins can be left open (floating)
or driven low thereby disconnecting the
terminating resistors and placing the internal
low dropout 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 subsequent reli-
able, error free communications. The
LX5205 has two disconnect pins for SCSI
Plug and Play (PnP) applications.
During normal operation, the LX5205
consumes only 800µA of current which is
the lowest enabled supply current of any
terminator available on the market today.
Linfinity's proprietary BiCMOS low dropout
regulator architecture enables this unique
and very efficient operating characteristic.
The LX5205 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. And
finally, the LX5205 sinks up to 100mA of
current making it compatible with today's
fast active negation drivers.
The LX5205 is a superior, pin-for-pin
replacement for the UC5607.
IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.
s SCSI PLUG AND PLAY, DUAL LOW
DISCONNECT, LOGIC LOW COMMAND
DISCONNECTS ALL TERMINATION LINES
s 2.5pF OUTPUT CAPACITANCE DURING
DISCONNECT
s 500nA SUPPLY CURRENT IN DISCONNECT
MODE
s 800µA SUPPLY CURRENT DURING NORMAL
OPERATION
s 100mA SINK CURRENT FOR ACTIVE
NEGATION
s LOGIC COMMAND DISCONNECTS ALL
TERMINATION LINES
s CURRENT LIMIT AND THERMAL PROTEC-
TION
s COMPATIBLE WITH SCSI 1, 2, 3, AND
FAST-20 STANDARDS
s HOT SWAP COMPATIBLE
PRODUCT HIGHLIGHT
R E C E I V I N G W AV E F O R M - 2 0 M H Z
D R I V I N G W AV E F O R M - 2 0 M H Z
Copyright © 1998
Rev. 0.7 3/98
Disconnect 1
Disconnect 2
Receiver
Driver
LX5205
PnP
1 Meter, AWG 28
LX5205
PnP
LX5268
LX5268
PA C K A G E O R D E R I N F O
TA (°C)
DWP
Plastic
28-pin,
SOWB
Power
0 to 70
LX5205CDWP
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. LX5205CDWPT)
Disconnect 1
Disconnect 2
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
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet LX5205.PDF ] | |
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