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參數(shù)資料
| 型號： | UCC5619 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | 27-Line SCSI Terminator With Reverse Disconnect(27線小型計算機接口終端匹配器（帶反向斷開）) |
| 中文描述： | 27線SCSI端接反向斷開（27線小型計算機接口終端匹配器（帶反向斷開）） |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 103K |
| 代理商： | UCC5619 |
DESCRIPTION
UCC5619 provides 27 lines of active termination for a SCSI (Small Com-
puter Systems Interface) parallel bus. The SCSI standard recommends ac-
tive termination at both ends of the cable.
The UCC5619 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 UCC5619 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 UCC5619 to source full termi-
nation current and sink active negation current when all termination lines
are actively negated.
The UCC5619, as with all Unitrode terminators, is completely hot pluggable
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 QSSOP (MWP) and 48 pin LQFP (FQP).
Consult SSOP-36 (MWP QSSOP-36) and FQP-48 Packaging Diagram for
exact dimensions.
UCC5619
27-Line SCSI Terminator With Reverse Disconnect
BLOCK DIAGRAM
FEATURES
Complies with SCSI, SCSI-2, SCSI-3,
SPI and FAST-20 (Ultra) Standards
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
Trimmed Impedance to 5%
Current Limit and Thermal Shutdown
Protection
10/98
UDG-96108
Circuit Design Patented
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC5620 | 27-Line SCSI Terminator(27線小型計算機接口終端匹配器) |
| 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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5619FQP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5619FQPTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5619MWP | 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 |
| UCC5619MWPG4 | 功能描述:SCSI 接口集成電路 27-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 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
| UCC5619MWPTR | 功能描述:SCSI 接口集成電路 27-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 安裝風格:SMD/SMT 封裝 / 箱體:SSOP-36 封裝:Tube |
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