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參數(shù)資料
| 型號： | UCC5620 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | 27-Line SCSI Terminator(27線小型計算機接口終端匹配器) |
| 中文描述： | 27線SCSI端接（27線小型計算機接口終端匹配器） |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 72K |
| 代理商： | UCC5620 |
UCC5620
DESCRIPTION
UCC5620 provides 27 lines of active termination for a SCSI (Small Com-
puter Systems Interface) parallel bus. The SCSI standard recommends
active termination at both ends of the cable.
The UCC5620 is ideal for high performance 5V SCSI systems. During
disconnect the supply current is typically only 100
μ
A, which makes the IC
attractive for lower powered systems.
The UCC5620 is designed with a low channel capacitance of 2.5pF,
which eliminates effects on signal integrity from disconnected terminators
at interim points on the bus.
The power amplifier output stage allows the UCC5620 to source full ter-
mination current and sink active negation current when all termination
lines are actively negated.
The UCC5620, as with all Unitrode terminators, is completely hot plugga-
ble and appears as high impedance at the teminating channels with
V
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 maximum
SCSI-3 specification as possible, which maximizes noise margin in fast
SCSI operation.
Other features include thermal shutdown and current limit. This device is
offered in low thermal resistance versions of the industry standard 36-Pin
Wide Body QSOP (MWP) and 48-Pin LQFP (FQP).
Consult QSOP-36 or LQFP-48 packaging diagram for exact dimensions.
27-Line SCSI Terminator
BLOCK DIAGRAM
FEATURES
Complies with SCSI, SCSI-2, SCSI-3,
SPI and FAST-20 (Ultra) Standards
2.5pF Channel Capacitance during
Disconnect
100mA Supply Current in Disconnect
Mode
4V To 7V Operation
110
Termination
Completely Meets SCSI Hot Plugging
–900mA Sourcing Current for
Termination
+500mA Sinking Current for Active
Negation
Logic Command Disconnects all
Termination Lines
Trimmed Impedance to 5%
Current Limit and Thermal Shutdown
Protection
SLUS287A - OCTOBER 1999
UDG-96109
Circuit Design Patented
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC5621 | 27 - Line SCSI Terminator With Split Reverse Disconnect(27線多模式小型計算機接口終端匹配器) |
| UCC5622 | 27 - Line SCSI Terminator With Split Disconnect(27線多模式小型計算機接口終端匹配器) |
| UCC5628 | Multimode SCSI 14 Line Terminator(14線多模式小型計算機接口終端匹配器) |
| UCC5629 | Multimode SCSI 14 Line Terminator(多模式小型計算機接口14線終端匹配器) |
| UCC5630A | Multimode SCSI 9 Line Terminator(多模式小型計算機接口9線終端匹配器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5620 WAF | 制造商:Texas Instruments 功能描述: |
| UCC5620FQP | 制造商:Rochester Electronics LLC 功能描述:27-LINE SCSI TERM - Bulk |
| UCC5620MWP | 功能描述:SCSI 接口集成電路 27line 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 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5620MWPG4 | 功能描述:SCSI 接口集成電路 27-Line 5V SE Term for Fast&Ultra SCSI 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 |
| UCC5620MWPTR | 功能描述:SCSI 接口集成電路 27-Line 5V SE Term for Fast&Ultra SCSI 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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