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參數(shù)資料
| 型號： | UCC5611 |
| 廠商： | Benchmark Technology Group |
| 英文描述： | SCSI 18 Line Terminator(計算機系統(tǒng)接口18線終端匹配器) |
| 中文描述： | 終結(jié)者的SCSI 18線（計算機系統(tǒng)接口18線終端匹配器） |
| 文件頁數(shù)： | 1/5頁 |
| 文件大小： | 149K |
| 代理商： | UCC5611 |
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SLUS348A – MARCH 1997 – REVISED NOVEMBER 2000
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Complies with SPI-2 and SPI-3 Standards
2.75-V to 7-V Operation
1.8-pF Channel Capacitance during
Disconnect
1-
μ
A Supply Current in Disconnect Mode
110-
/2.5-k Programmable Termination
Completely Meets SCSI Hot Plugging
–650-mA Sourcing Current for Termination
+400-mA Sinking Current for Active
Negation Drivers
Trimmed Termination Current to 4
%
Trimmed Impedance to 7
%
Current Limit and Thermal Shutdown
Protection
description
The UCC5611 provides 18 lines of active termination for a SCSI (Small Computer Systems Interface) parallel
bus. The SCSI standard recommends active termination at both ends of the cable segment.
The UCC5611 is ideal for high performance 3.3-V SCSI systems. The key features contributing to such
low-operating voltage are the 0.1-V drop-out regulator and the 2.75-V reference. During disconnect the supply
current is typically only 1
μ
A, which makes the IC attractive for battery powered systems.
The UCC5611 is designed with an ultra-low channel capacitance of 1.8 pF, which eliminates effects on signal
integrity from disconnected terminators at interim points on the bus.
The UCC5611 can be programmed for either a 110-
or 2.5-k
termination. The 110-
termination is used for
standard SCSI bus lengths and the 2.5-k
termination is typically used in short bus applications. When driving
the TTL compatible DISCNCT pin directly, the 110-
termination is connected when the DISCNCT pin is driven
high, and disconnected when low. When the DISCNCT pin is driven through an impedance between 80 k
and
150 k
, the 2.5-k
termination is connected when the DISCNCT pin is driven high, and disconnected when
driven low.
block diagram
UDG-94131-1
Copyright
2000, Texas Instruments Incorporated
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC5618 | 18-Line SCSI Terminator(18線 小型計算機系統(tǒng)終端匹配器) |
| UCC5619 | 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）) |
| 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) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC5611DWP | 功能描述:IC SCSI 18-LINE TERM 28-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 信號終端器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 類型:SCSI，SE 端子數(shù):9 電源電壓:4 V ~ 5.25 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC 包裝:管件 |
| UCC5611DWPTR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5611J | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5611N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
| UCC5611QP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Terminator |
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