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UC5613QPTR PDF预览

UC5613QPTR

更新时间: 2024-11-10 13:15:07
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
5页 247K
描述
Lower Capacitance 9-Line 5V SE Terminator for SCSI and Fast SCSI 28-PLCC 0 to 70

UC5613QPTR 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:QLCC
包装说明:QCCJ, LDCC28,.5SQ针数:28
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.79
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

UC5613QPTR 数据手册

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UC5613  
9-Line Low Capacitance SCSI Active Terminator  
FEATURES  
DESCRIPTION  
Complies with SCSI, SCSI-2 and  
SPI-2 Standards  
The UC5613 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.  
3pF Channel Capacitance during  
Disconnect  
The UC5613 provides a disconnect feature which, when opened or driven  
high, disconnects all terminating resistors and disables the regulator  
greatly reducing standby power. The output channels remain high imped-  
ance even without Termpwr applied. A low channel capacitance of 3pF al-  
lows units at interim points of the bus to have little or no effect on the signal  
integrity.  
100µA Supply Current in  
Disconnect Mode  
Meets SCSI Hot Plugging Capability  
400mA Sourcing Current for  
Termination  
The UC5613 is pin-for-pin compatible with its predecessor, the UC5603 - 9  
line Active Terminator. The only functional difference between the UC5613  
and UC5603 is the absence of the negative clamps. Parametrically, the  
UC5613 has a 5% tolerance on impedance and current compared to a 3%  
tolerance on the UC5603. Custom power packages are utilized to allow  
normal operation at full power (1.2 watts).  
+400mA Sinking Current for Active  
Negation  
Logic Command Disconnects all  
Termination Lines  
Trimmed Termination Current to 5%  
Trimmed Impedance to 5%  
Internal circuit trimming is utilized, first to trim the impedance to a 5% toler-  
ance; then, the output current is trimmed to a 5% tolerance. The output  
current trim is set as close as possible to the maximum value of the SCSI  
specification which maximizes the noise margin for fast SCSI operation.  
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-94003-1  
Circuit Design Patented  
3/97  

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