LX5205

更新时间： 2024-09-20 22:46:51

品牌	Logo	应用领域
美高森美 - MICROSEMI		/
页数	文件大小	规格书
4页	145K
描述
18-LINE PLUG AND PLAY, レPOWER SCSI TERMINATOR

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中文翻译

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数据手册

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LX5205 数据手册

LIN DOC #: 5205

LX5205

18-LINE PLUG AND PLAY, µPOWER SCSI TERMINATOR

P R E L I M I N A R Y D A T A S H E E T

T H E I N F I N I T E P O W E R O F I N N O V A T I O N

DESCRIPTION

KEY FEATURES

■ SCSI PLUG AND PLAY, DUAL LOW

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 normal operation, the LX5205

consumes only 800µA of current which is

DISCONNECT, LOGIC LOW COMMAND

DISCONNECTS ALL TERMINATION LINES

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.

■ 2.5pF OUTPUT CAPACITANCE DURING

DISCONNECT

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. Indisconnectmodeeachtermination

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.

■ 500nA SUPPLY CURRENT IN DISCONNECT

MODE

■ 800µA SUPPLY CURRENT DURING NORMAL

OPERATION

■ 100mA SINK CURRENT FOR ACTIVE

NEGATION

■ LOGIC COMMAND DISCONNECTS ALL

TERMINATION LINES

■ CURRENT LIMIT AND THERMAL PROTEC-

TION

■ COMPATIBLE WITH SCSI 1, 2, 3, AND

FAST-20 STANDARDS

The LX5205 is a superior, pin-for-pin

replacement for the UC5607.

■ HOT SWAP COMPATIBLE

IMPORTANT: For the most current data, consult LinFinity's web site: http://www.linfinity.com.

PRODUCT HIGHLIGHT

RECEIVING WAVEFORM - 20MHZ

DRIVING WAVEFORM - 20MHZ

Receiver

Driver

1 Meter, AWG 28

Disconnect 1

Disconnect 2

Disconnect 1

Disconnect 2

LX5205

PnP

LX5205

PnP

LX5268

NOTE:

For An In-Depth

PACKAGE ORDER INFO

Discussion On Applying

SCSI, Request Linfinity

Application Note:

"Understanding The

Single-Ended SCSI Bus"

Plastic SOWB

28-pin, Power

T_A(°C)

DWP

0 to 70

LX5205CDWP

Note: All surface-mount packages are available in Tape & Reel.

Append the letter "T" to part number. (i.e. LX5205CDWPT)

L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .

11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570

Rev. 0.7 3/98

12 3 4

中文翻译

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与LX5205相关器件

型号	品牌	获取价格	描述	数据表
LX5205CDWP	MICROSEMI	获取价格	18-LINE PLUG AND PLAY, レPOWER SCSI TERMINATOR
LX5205CDWPT	MICROSEMI	获取价格	Terminator
LX5207	MICROSEMI	获取价格	18-LINE LOW CAPACITANCE, レPOWER SCSI TERMINAT
LX5207CDWP	MICROSEMI	获取价格	18-LINE LOW CAPACITANCE, レPOWER SCSI TERMINAT
LX5207CDWPT	MICROSEMI	获取价格	Terminator
LX5207CN	ETC	获取价格	Terminator
LX5208	MICROSEMI	获取价格	18-LINE LOW CAPACITANCE, レPOWER SCSI TERMINAT
LX5208CDWP	MICROSEMI	获取价格	18-LINE LOW CAPACITANCE, レPOWER SCSI TERMINAT
LX5208CDWPT	MICROSEMI	获取价格	Terminator
LX5208CN	ETC	获取价格	Terminator

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