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UC5604QPTR PDF预览

UC5604QPTR

更新时间： 2024-11-19 21:04:11
品牌 Logo 应用领域
德州仪器 - TI 接口集成电路
页数 文件大小 规格书
5页 242K
描述
Cost Reduced 9-Line 5V Terminator for SCSI and Fast SCSI 28-PLCC 0 to 70

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中文翻译

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UC5604QPTR 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete包装说明：QCCJ, LDCC28,.5SQ
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.78
差分输出：NO接口集成电路类型：SCSI BUS TERMINATOR
JESD-30 代码：S-PQCC-J28长度：11.505 mm
功能数量：1信号线数量：9
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：QCCJ封装等效代码：LDCC28,.5SQ
封装形状：SQUARE封装形式：CHIP CARRIER
峰值回流温度（摄氏度）：NOT SPECIFIED电源：5 V
标称上拉电阻：110 Ω认证状态：Not Qualified
座面最大高度：4.57 mm子类别：Bus Terminators
最大供电电压：5.25 V最小供电电压：3.8 V
标称供电电压：4.75 V表面贴装：YES
技术：BIPOLAR温度等级：COMMERCIAL
端子形式：J BEND端子节距：1.27 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：11.505 mmBase Number Matches：1

UC5604QPTR 数据手册

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UC5604  
9-Line Low Capacitance SCSI Active Terminator  
FEATURES  
DESCRIPTION  
•
•
•
Complies with SCSI, SCSI-2  
Standards  
The UC5604 provides 9 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 segment.  
9pF Channel Capacitance during  
Disconnect  
The UC5604 provides a disconnect feature which, when opened or driven  
high, will disconnect all terminating resistors and disable the regulator,  
greatly reducing standby power. The output channels remain high imped-  
ance even without Termpwr applied.  
100µA Supply Current in  
Disconnect Mode  
•
•
Meets SCSI Hot Plugging Capability  
The UC5604 is pin-for-pin compatible with its predecessor, the UC5603 - 9  
line Active Terminator. The only functional difference between the UC5604  
and UC5603 is the absence of the negative clamps. Parametrically, the  
UC5604 has a 7% tolerance on impedance and current compared to a 3%  
tolerance on the UC5603 and the sink current is reduced from 300mA to  
40mA. Custom power packages are utilized to allow normal operation at  
full power conditions (1.2 watts).  
−300mA Sourcing Current for  
Termination  
•
•
+40mA Sinking Current for Active  
Negation  
Logic Command Disconnects all  
Termination Lines  
Internal circuit trimming is utilized, first to trim the impedance to a 7% toler-  
ance, and then most importantly, to trim the output current to a 7% toler-  
ance, as close to the max SCSI spec as possible, which maximizes noise  
margin in fast SCSI operation.  
•
•
•
Trimmed Termination Current to 7%  
Trimmed Impedance to 7%  
Current Limit and Thermal  
Shutdown Protection  
Other features include thermal shutdown and current limit.  
This device is offered in low thermal resistance versions of the industry  
standard 16 pin narrow body SOIC, 16 pin ZIP (zig-zag in line package)  
and 24 pin TSSOP.  
BLOCK DIAGRAM  
UDG-94064  
Circuit Design Patented  
3/97  
12345

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