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參數(shù)資料
| 型號(hào)： | UCC5618 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | 18-Line SCSI Terminator(18線 小型計(jì)算機(jī)系統(tǒng)終端匹配器) |
| 中文描述： | 18線SCSI端接（18線小型計(jì)算機(jī)系統(tǒng)終端匹配器） |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大小： | 235K |
| 代理商： | UCC5618 |
UCC5618
DESCRIPTION
The UCC5618 provides 18 lines of active termination for a SCSI (Small
Computers Systems Interface) parallel bus. The SCSI standard recom-
mends and Fast-20 (Ultra) requires active termination at both ends of the
cable.
Pin for pin compatible with the UC5601 and UC5608, the UCC5618 is ideal
for high performance 5V SCSI systems, Termpwr 4.0-5.25V. During discon-
nect the supply current is only 50
μ
A typical, which makes the IC attractive
for lower powered systems.
The UCC5618 is designed with a low channel capacitance of 2pF, which
eliminates effects on signal integrity from disconnected terminators at in-
terim points on the bus.
The power amplifier output stage allows the UCC5618 to source full termi-
nation current and sink active negation current when all termination lines
are actively negated.
The UCC5618, as with all Unitrode terminators, is completely hot pluggable
and appears as high impedance at the terminating channels with
TRMPWR=0V or open.
Internal circuit trimming is utilized, first to trim the 110
impedance, and
then most importantly, to trim the output current as close to the max
SCSI-3 spec as possible, which maximizes noise margin in fast SCSI op-
eration.
This device is offered in low thermal resistance versions of the industry
standard 28 pin wide body SOIC, TSSOP and PLCC.
18-Line SCSI Terminator
FEATURES
Complies with SCSI, SCSI-2, SCSI-3,
SPI and FAST-20 Standards
2pF Channel Capacitance During
Disconnect
50
μ
A Supply Current in Disconnect
Mode
110
Termination
SCSI Hot Plugging Compliant, 10nA
Typical
+400mA Sinking Current for Active
Negation
–650mA Sourcing Current for
Termination
Trimmed Impedance to 5%
Thermal Shutdown
Current Limit
6/98
BLOCK DIAGRAM
UDG-96005-1
Patented Circuit Design
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC5619 | 27-Line SCSI Terminator With Reverse Disconnect(27線小型計(jì)算機(jī)接口終端匹配器（帶反向斷開(kāi)）) |
| UCC5620 | 27-Line SCSI Terminator(27線小型計(jì)算機(jī)接口終端匹配器) |
| UCC5621 | 27 - Line SCSI Terminator With Split Reverse Disconnect(27線多模式小型計(jì)算機(jī)接口終端匹配器) |
| UCC5622 | 27 - Line SCSI Terminator With Split Disconnect(27線多模式小型計(jì)算機(jī)接口終端匹配器) |
| UCC5628 | Multimode SCSI 14 Line Terminator(14線多模式小型計(jì)算機(jī)接口終端匹配器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5618DWP | 功能描述:SCSI 接口集成電路 18line 3 5V SCSI SE 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(fēng)格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5618DWPG4 | 功能描述:SCSI 接口集成電路 Lowest Capacitance 18-Line 5V SE 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(fēng)格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5618DWPTR | 功能描述:SCSI 接口集成電路 Lowest Capacitance 18-Line 5V SE 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(fēng)格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5618DWPTRG4 | 功能描述:SCSI 接口集成電路 Lowest Capacitance 18-Line 5V SE 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(fēng)格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5618N | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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