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參數(shù)資料
| 型號： | UCC5640 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | Low Voltage Differential (LVD) SCSI 9 Line Terminator(低壓差分小型計算機接口9線終端匹配器) |
| 中文描述： | 低壓差分（LVD）的SCSI 9線終結者（低壓差分小型計算機接口九線終端匹配器） |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 71K |
| 代理商： | UCC5640 |
UCC5640
SLUS314A - JANUARY 2000
FEATURES
First LVD only Active Terminator
Meets SCSI SPI-2 Ultra2 (Fast-40)
and Ultra3 / Ultra160 (Fast-80)
Standards
2.7V to 5.25V Operation
Differential Failsafe Bias
Low Voltage Differential (LVD) SCSI 9 Line Terminator
REF 1.25V
15
DISCNCT
27
LVD*
1
REG
11
DIFFB
4
L1–
3
L1+
26
L9–
25
L9+
56mV
–
SOURCE/SINK REGULATOR
REF 1.3V
1.3V
±
0.1V
0.7V > 0.5V
2.4V > 1.9V
HIGH IMPEDANCE RECEIVER
EVEN WITH POWER OFF
SINGLE
ENDED
HIGH POWER
DIFFERENTIAL
12
DIFSENS
SOURCE 5–15mA
SINK 200
μ
A MAXIMUM (NOISE LOAD)
OPEN CIRCUIT ON POWER OFF
OR OPEN CIRCUIT IN A
DISABLED TERMINATOR MODE
10
μ
A
28
TRMPWR
LOW
FREQUENCY
FILTER
50Hz – 60Hz
20k
124
124
52
52
52
52
4.7
μ
F
0.1
μ
F
14
GND
SOURCE ONLY FROM TRMPWR AND THE ENABLED TERMINATIONS
2.7V to 5.25V
56mV
+
–
+
56mV
+
–
56mV
–
+
BLOCK DIAGRAM
UDG-98181
DESCRIPTION
The UCC5640 is an active terminator for Low Voltage Differential (LVD)
SCSI networks. This LVD only design allows the user to reach peak bus
performance while reducing system cost. The device is designed as an
active Y-terminator to improve the frequency response of the LVD Bus.
Designed with a 1.5pF channel capacitance, the UCC5640 allows for mini-
mal bus loading for a maximum number of peripherals. With the
UCC5640, the designer will be able to comply with the Fast-40 SPI-2 and
Fast-80 SPI-3 specifications. The UCC5640 also provides a much-needed
system migration path for ever improving SCSI system standards. This de-
vice is available in the 24 pin TSSOP and 28 pin TSSOP for ease of lay-
out use.
The UCC5640 is not designed for use in single ended or high voltage dif-
ferential systems.
* 28 pin package only
相關PDF資料 |
PDF描述 |
|---|---|
| UCC5641 | Low Voltage Differential LVD SCSI 9 Line Terminator |
| UCC5641 | Low Voltage Differential (LVD) SCSI 9 Line Terminator(低壓差分小型計算機系統(tǒng)接口9線終端匹配器) |
| UCC5642 | LVD-only Small Computer System Interface (SCSI) Terminator(用于低壓差分小型計算機系統(tǒng)接口的終端匹配器) |
| UCC5646 | 27 Line Active Terminator For low-voltage-Differential(27線 小型計算機系統(tǒng)終端匹配器) |
| UCC5672 | Multimode (LVD/SE) SCSI 9 Line Terminator(多模式小型計算機接口9線終端匹配器) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5640EVM | 功能描述:界面開發(fā)工具 Low Vltg Diff SCSI 9 Line Term Demo Kit RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| UCC5640PW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5640PW24 | 功能描述:SCSI 接口集成電路 9line 3-5V SCSI Mult RoHS:否 制造商:Texas Instruments 工作電源電壓:2.7 V to 5.25 V 電源電流:13 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5640PW-24 | 制造商:UNITRODE 功能描述: |
| UCC5640PW24G4 | 功能描述:SCSI 接口集成電路 9 Line 2.7-5V LVD for Ultra2-Ultra320 RoHS:否 制造商:Texas Instruments 工作電源電壓:2.7 V to 5.25 V 電源電流:13 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
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