lx5250 Microsemi Corporation, lx5250 Datasheet

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lx5250

Manufacturer Part Number
lx5250
Description
9-line Multimode Scsi Terminator
Manufacturer
Microsemi Corporation
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
lx5250CDB
Manufacturer:
E
Quantity:
67
Part Number:
lx5250CPW
Manufacturer:
Renesas
Quantity:
110
Copyright © 2002
Rev. 1.2b, 2005-08-29
terminator that is compatible with the
SCSI SPI-2 (Ultra2 SCSI), SCSI SPI-3
(Ultra3 SCSI or Ultra160 SCSI), and
SCSI SPI-4 (Ultra320) specifications
developed
committee for low voltage differential
(LVD) termination, while providing
backwards compatibility to the SCSI,
SCSI-2,
specifications. Multimode compatibility
permits the use of legacy devices on the
bus
Automatic mode selection is achieved
through
Diffsense line.
standard
individual
maximize channel separation, reduce
channel-to-channel noise and cross talk
to insure Ultra320 performance.
differential sense (DIFFSENSE) pin
supplies a voltage between 1.2V and
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
The LX5250/52 is a multimode SCSI
The LX5250/52 utilizes an industry
When the LX5250/52 is enabled, the
without
TM
L X 5250/
L X 5252
voltage
LVD
and
by
high
hardware
the
SPI
detection
bandwidth
architecture.
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
T10
single-ended
alterations.
+
standards
D E S C R I P T I O N
on
T
0 to 70
drivers
A
-
The
(°C)
the
Append the letters “TR” to the part number. (i.e. LX5250CDB-TR)
1.4V.
DIFFSENSE input of the corresponding LVD
transceivers.
transceiver function. DIFFSENSE is capable of
supplying a maximum of 10mA.
LX5250/52 in a HI Z state indicating the
presence of an HVD device. Tying the pin low
places the part in a single-ended mode while
also signaling the multimode transceiver to
operate in a single-ended mode.
configurable peripherals, the LX5250/52 has a
TTL compatible sleep/disable mode. During
this sleep/disable mode, power dissipation is
reduced to a meager 15uA while also placing
all outputs in a HI Z state.
sleep/disable mode, the DIFFSENSE function
is disabled and is placed in a HI Z state.
slave function.
floating the pin enables the 1.3V DIFFSENSE
reference. Driving the pin low disables the on
board DIFFSENSE reference and enables use
of an external master reference device.
Tying the DIFFSENSE pin high places the
Recognizing the needs of portable and
The LX5250/52 also provides a master /
DB
P R O D U C T H I G H L I G H T
RoHS Compliant / Pb-free
In application this pin is tied to the
Integrated Products Division
Transition DC: 0535
PACKAGE ORDER INFO
LX5250CDB
LX5252CDB
QSOP
36-Pin
®
Note: Available in Tape & Reel.
Microsemi
This action enables the LVD
Driving this pin high or
9-Line Multimode SCSI Terminator
Also during
PW
P
RoHS Compliant / Pb-free
RODUCTION DATA SHEET
Transition DC: 0518
LX5250CPW
TSSOP
28-Pin
+
-
Compliant with SCSI SPI-2
(Ultra2), SPI-3 (Ultra160), and
SPI-4 (Ultra320)
Auto-Selectable LVD or Single-
Ended Termination
Fast Response, No Output
Capacitors Required
Compatible with Active Negation
Drivers
15µA Supply Current in
Disconnect Mode
Logic Command Disconnects All
Termination Lines
Diffsense Line Driver
Ground Driver Integrated for
Single-Ended Operation
Current Limit and Thermal
Protection
Hot-Swap Compatible (Single-
Ended)
Available in 36-pin QSOP and 28-
pin TSSOP package
LX5250, 36-pin QSOP: Pin
Compatible With DS2118,
UCC5630A and UCC5672
LX5250 28-pin TSSOP: Pin
Compatible with DS2119, and
UCC5672
-
K E Y F E A T U R E S
L X 5250/
L X 5252
LX5250/5252
Page 1

Related parts for lx5250

lx5250 Summary of contents

Page 1

... RoHS Compliant / Pb-free Transition DC: 0535 Transition DC: 0518 LX5250CDB LX5252CDB Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX5250CDB-TR) Microsemi Integrated Products Division LX5250/5252 Compliant with SCSI SPI-2 (Ultra2), SPI-3 (Ultra160), and ...

Page 2

... DISCONNECT 13 16 GND 14 15 LX5250 O NLY PW P ACKAGE (Top View) N/C = Not internally connected RoHS / Pb-free 100% Matte Tin Lead Finish Quiescent Current Type SE 55mA LVD 35mA HI-Z 8mA HI-Z 10µA V TERM HVD LVD SE 9- ...

Page 3

... VTerm SE Signal Line Voltage Disconnect Input Voltage Operating Junction Temperature Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C For the LX5250, DISCONNECT = L; for the LX5252, DISCONNECT = H. Parameter Symbol LVD Terminator Section VTerm Supply Current LVD Common Mode Voltage ...

Page 4

... TM Unless otherwise specified, the following specifications apply over the operating ambient temperature 0°C For the LX5250, DISCONNECT = L; for the LX5252, DISCONNECT = H. Parameter Symbol DISCONNECT Section Disconnect Thresholds Input Current MASTER/SLAVE Section Master/Slave Thresholds V Input Current Note 1: Guaranteed by design. 36 VTERM DISC 17 DISCONNECT ...

Page 5

... An RC filter 4.7 (50K resistor & not required on the LX5250 as it has an internal timer. Ω µ Single-Ended output; when High, terminator is operating in SE mode. Low Voltage Differential output; when High, terminator is operating in LVD mode. ...

Page 6

... DISC GND DIFFSENS NC* Pin 1 4.7uF *The capacitor on pin 1 can be placed on the LX5250CDB, LX5250CPW, or LX5252CDB to be pin-compatible with other devices, but is not required. Copyright © 2002 Rev. 1.2b, 2005-08-29 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® 9-Line Multimode SCSI Terminator ...

Page 7

... *LC Note: 1. Dimensions do not include mold flash or protrusions; these shall not exceed 0.155mm(.006”) on any side. Lead dimension shall not include solder coverage. Microsemi Integrated Products Division LX5250/5252 P RODUCTION DATA SHEET M I ILLIMETERS NCHES MIN MAX MIN MAX 2.14 2 ...

Page 8

... Microsemi reserves the right to change the configuration and performance of the product and to discontinue product at any time. Copyright © 2002 Rev. 1.2b, 2005-08-29 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 ® 9-Line Multimode SCSI Terminator P RODUCTION DATA SHEET Microsemi Integrated Products Division LX5250/5252 Page 8 ...

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