- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄376114 > LX5225CDWPT (MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP) Terminator PDF資料下載
參數(shù)資料
| 型號(hào)： | LX5225CDWPT |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類(lèi)： | 通用總線(xiàn)功能 |
| 英文描述： | Terminator |
| 中文描述： | 18-LINE 110 ohm SCSI BUS TERMINATOR, PDSO28 |
| 封裝： | PLASTIC, SOP-28 |
| 文件頁(yè)數(shù)： | 4/4頁(yè) |
| 文件大小： | 148K |
| 代理商： | LX5225CDWPT |
U
LTRA
18-L
INE
, P
LUG
AND
P
LAY
SCSI T
ERMINATOR
LX5225
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Copyright 1999
Rev. 1.0 5/99
4
P
R O D U C T I O N
D
A T A
S
H E E T
UltraMAX
F U N C T I O N A L D E S C R I P T I O N
Cable transmission theory suggests to optimize signal speed
and quality, the termination should act both as an ideal voltage
reference when the line is released (deasserted) and as an
ideal current source when the line is active (asserted). Common
active terminators, which
consist of Linear Regula-
tors in series with resis-
tors (typically 110
), are
a compromise. As the
line voltage increases,
the amount of current de-
creases linearly by the
equation V = I * R. The
LX5225, with its unique
new architecture applies
the maximum amount of
current regardless of line voltage until the termination high
threshold (2.85V) is reached.
Acting as a near ideal line terminator, the LX5225 closely
reproduces the optimum case when the device is enabled.
To enable the device a DISC1 and DISC2 pins must be pulled
Logic High. During this mode of operation, quiescent current
is 10mA and the device will respond to line demands by
delivering 24mA on assertion and by imposing 2.85V on
deassertion. In order to
disable the device, the
DISC1 and DISC2 pins
must be driven logic
Low
.
This mode of operation
places the device in a sleep
state where a meager
150μA of quiescent current
is consumed. Additionally,
all outputs are in a Hi-Z
(impedance) state. Sleep
mode can be used for
power conservation or to completely eliminate the terminator
from the SCSI chain.
An additional feature of the LX5225 is its compatibility with
active negation drivers.
DISC 1
DISC 2
Outputs
Quiescent
Current
H
H
L
L
H
L
H
L
Disabled
Enabled
Enabled
Disabled
Disabled
15mA
15mA
15mA
150μA
150μA
Open
Open
P
OWER
U
P
/ P
OWER
D
OWN
F
UNCTION
T
ABLE
UltraMAX is a trademark of Linfinity Microelectronics Inc.
PRODUCTION DATA - Information contained in this document is proprietary to Linfinity, and is current as of publication date. This document
may not be modified in any way without the express written consent of Linfinity. Product processing does not necessarily include testing of
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LX5226 | ULTRA 1 8 - LINE SCSI TERMINATOR |
| LX5226CDWP | ULTRA 1 8 - LINE SCSI TERMINATOR |
| LX5226CDWPT | Terminator |
| LX5241CPWK | MULTIMODE SCSI TERMINATOR |
| LX5242CPWK | MULTIMODE SCSI TERMINATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LX5226 | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:ULTRA 1 8 - LINE SCSI TERMINATOR |
| LX5226CDWP | 制造商:Linfinity Microelectronics Inc 功能描述:TERMINATOR, 28 Pin, Plastic, SOP |
| LX5226CDWPT | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:Terminator |
| LX5240 | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:MULTIMODE, PLUG AND PLAY SCSI TERMINATOR |
| LX5240CDB | 制造商:MICROSEMI 制造商全稱(chēng):Microsemi Corporation 功能描述:MULTIMODE, PLUG AND PLAY SCSI TERMINATOR |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。