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參數(shù)資料
| 型號： | LX5226CDWP |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 通用總線功能 |
| 英文描述： | ULTRA 1 8 - LINE SCSI TERMINATOR |
| 中文描述： | 18-LINE 110 ohm SCSI BUS TERMINATOR, PDSO28 |
| 封裝： | PLASTIC, SOP-28 |
| 文件頁數(shù)： | 4/4頁 |
| 文件大?。?/td> | 147K |
| 代理商： | LX5226CDWP |
U
LT R A
1 8 - L
I N E
S C S I T
E R M I N A T O R
LX5226
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 that in order 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 Regulators
in series with resistors (typically 110
), are a compromise.
As the line voltage increases, the amount of current decreases
linearly by the equation V = I * R. The LX5226, 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 LX5226 closely
reproduces the optimum case when the device is enabled.
To enable the device a DISC pin must be pulled Logic
Low
.
During this mode of operation, quiescent current is 6mA 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 DISC pin must be driven logic
High
.
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 LX5226 is its compatibility with
active negation drivers.
DISC Pin
Outputs
Quiescent
Current
15mA
150μA
150μA
L
H
Enabled
HI Z
HI Z
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
相關PDF資料 |
PDF描述 |
|---|---|
| LX5226CDWPT | Terminator |
| LX5241CPWK | MULTIMODE SCSI TERMINATOR |
| LX5242CPWK | MULTIMODE SCSI TERMINATOR |
| LX5241CDBK | MULTIMODE SCSI TERMINATOR |
| LX5242CDBK | MULTIMODE SCSI TERMINATOR |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LX5226CDWPT | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Terminator |
| LX5240 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:MULTIMODE, PLUG AND PLAY SCSI TERMINATOR |
| LX5240CDB | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:MULTIMODE, PLUG AND PLAY SCSI TERMINATOR |
| LX5240CDBT | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Terminator |
| LX5240CPW | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:MULTIMODE, PLUG AND PLAY SCSI TERMINATOR |
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