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UCC5617DWPG4 PDF预览

UCC5617DWPG4

更新时间： 2024-11-20 20:58:55
品牌 Logo 应用领域
罗彻斯特 - ROCHESTER 光电二极管接口集成电路
页数 文件大小 规格书
8页 304K
描述
SCSI Terminator, 18-Line, 110ohm, PDSO28, GREEN, SOIC-28

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中文翻译

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UCC5617DWPG4 技术参数

生命周期：Contact Manufacturer包装说明：SOP,
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.64
差分输出：NO接口集成电路类型：SCSI BUS TERMINATOR
JESD-30 代码：R-PDSO-G28长度：17.9 mm
功能数量：1信号线数量：18
端子数量：28最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE标称上拉电阻：110 Ω
座面最大高度：2.65 mm最大供电电压：5.25 V
最小供电电压：4 V标称供电电压：4.75 V
表面贴装：YES温度等级：COMMERCIAL
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：7.5 mm
Base Number Matches：1

UCC5617DWPG4 数据手册

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UCC5617  
18-Line SCSI Terminator (Reverse Disconnect)  
FEATURES  
DESCRIPTION  
• Complies with SCSI, SCSI-2, SCSI-3, The UCC5617 provides 18 lines of active termination for a SCSI (Small  
SPI and FAST-20 Standards  
Computers Systems Interface) parallel bus. The SCSI standard recom-  
mends and Fast-20 (Ultra) requires active termination at both ends of the  
cable.  
• 2pF Channel Capacitance During  
Disconnect  
Pin for pin compatible with the UC5609, the UCC5617 is ideal for high per-  
formance 5V SCSI systems, Termpwr 4.0-5.25V. During disconnect the  
supply current is only 50 A typical, which makes the IC attractive for lower  
powered systems.  
• 50mA Supply Current in Disconnect  
Mode  
• 110 Termination  
• SCSI Hot Plugging Compliant, 10nA  
The UCC5617 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.  
Typical  
• +400mA Sinking Current for Active  
Negation  
The power amplifier output stage allows the UCC5617 to source full termi-  
nation current and sink active negation current when all termination lines  
are actively negated.  
• –650mA Sourcing Current for  
Termination  
The UCC5617, as with all Unitrode terminators, is completely hot pluggable  
and appears as high impedance at the terminating channels with  
TRMPWR = 0V or open.  
• Trimmed Impedance to 5%  
• Thermal Shutdown  
• Current Limit  
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.  
This device is offered in low thermal resistance versions of the industry  
standard 28 pin wide body SOIC.  
BLOCK DIAGRAM  
UDG-96073  
Patented Circuit Design  
SLUS351A - APRIL 1997 - REVISED AUGUST 2002  
12345678

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