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參數(shù)資料
| 型號(hào)： | UCC5622 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | 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) |
| 中文描述： | 27 -線SCSI端接配劈開斷開（27線多模式小型計(jì)算機(jī)接口終端匹配器） |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 287K |
| 代理商： | UCC5622 |
DESCRIPTION
The UCC5622 provides 27 lines of active termination for a SCSI (Small
Computer Systems Interface) parallel bus. The SCSI standard recom-
mends active termination at both ends of the cable.
The UCC5622 is ideal for high performance 5V SCSI systems. During dis-
connect the supply current is typically only 100
μ
A, which makes the IC at-
tractive for lower powered systems.
The UCC5622 features a split disconnect allowing the user to control termi-
nation lines 10 to 27 with disconnect one, DISCNCT1, and control terminia-
tion lines 1 to 9 with disconnect two, DISCNCT2.
The UCC5622 is designed with a low channel capacitance of 2.5pF, which
eliminates effects on signal integrity from disconnected terminators at in-
terim points on the bus.
The power amplifier output stage allows the UCC5622 to source full termi-
nation current and sink active negation current when all termination lines
are actively negated.
The UCC5622, 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-
20 SCSI operation.
(continued)
UCC5622
27 - Line SCSI Terminator With Split Disconnect
FEATURES
Complies with SCSI, SCSI-2, SCSI-3,
SPI and FAST-20 (Ultra) Standards
BLOCK DIAGRAM
2.5pF Channel Capacitance During
Disconnect
100
μ
A 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
Split Disconnect Controls Lines 1 to 9
and 10 to 27 Separately
Trimmed Impedance to 5%
Current Limit and Thermal Shutdown
Protection
10/98
UDG-96113
Circuit Design Patented
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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) |
| UCC5629 | Multimode SCSI 14 Line Terminator(多模式小型計(jì)算機(jī)接口14線終端匹配器) |
| UCC5630A | Multimode SCSI 9 Line Terminator(多模式小型計(jì)算機(jī)接口9線終端匹配器) |
| UCC5631A | Multimode SCSI 9 Line Terminator(多模式小型計(jì)算機(jī)接口14線終端匹配器) |
| UCC5638 | Multimode SCSI 15 Line Terminator(多模式小型計(jì)算機(jī)接口15線終端匹配器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5622FQP | 制造商:Rochester Electronics LLC 功能描述:27-LINE SCSI TERM W/ SPLIT DISCONNECT - Bulk 制造商:Texas Instruments 功能描述: |
| UCC5622FQPTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5622MWP | 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(fēng)格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5622MWPG4 | 功能描述:SCSI 接口集成電路 27Line 5V SE Term 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 |
| UCC5622MWPTR | 功能描述:SCSI 接口集成電路 27Line 5V SE Term 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 |
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