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DS21T06S PDF预览

DS21T06S

更新时间: 2024-10-28 04:15:11
品牌 Logo 应用领域
达拉斯 - DALLAS 总线通信驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
6页 115K
描述
SCSI Terminator

DS21T06S 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:0.300 INCH, PLASTIC, SOIC-28Reach Compliance Code:unknown
风险等级:5.83差分输出:NO
接口集成电路类型:SCSI BUS TERMINATORJESD-30 代码:R-PDSO-G28
JESD-609代码:e0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
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE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子类别:Bus Terminators
最大供电电压:5.25 V最小供电电压:4 V
标称供电电压:5 V表面贴装:YES
技术:BIPOLAR温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIEDBase Number Matches:1

DS21T06S 数据手册

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DS21T06  
SCSI Terminator  
www.dalsemi.com  
FEATURES  
PIN ASSIGNMENT  
Fully compliant with SCSI-1, Fast SCSI and  
Ultra SCSI  
PD  
R1  
R2  
R3  
R4  
R5  
1
2
3
4
5
6
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
GND  
R18  
R17  
R16  
R15  
R14  
NC  
HS-GND  
NC  
R13  
R12  
R11  
R10  
Functional drop in replacement for the  
DS2106  
Complimentary part to DS21T07 for wide  
SCSI  
Provides active termination for 18 signal lines  
5% tolerance on termination resistors and  
voltage regulator  
HS-GND  
HS-GND  
NC  
7
8
9
R6  
R7  
R8  
R9  
10  
11  
12  
13  
14  
5% tolerance on termination current  
Low power down capacitance of 3 pF  
Onboard thermal shutdown circuitry  
SCSI bus hot plug compatible  
Fully supports actively negated SCSI signals  
TPWR  
VREF  
DS21T06S 28-Pin SOIC (300-mil)  
DESCRIPTION  
Fast SCSI and Ultra SCSI require the use of active terminations at both ends of every cable segment in a  
SCSI system with single-ended drivers and receivers. Ultra SCSI requires support of active negation and  
hot plugging. The DS21T06 is fully compliant with these standards.  
The DS21T06 integrates a low dropout regulator and 18 precise switched 110 ohms termination resistors  
into a 28-pin 300-mil SOIC package.  
Active termination provides greater immunity to voltage drops on the TERMPWR (TERMination  
PoWeR) line, enhanced high-level noise immunity, intrinsic TERMPWR decoupling, and very low  
quiescent current consumption. One DS21T06 can be used to terminate the Narrow SCSI bus, or a  
DS21T07 can be used with a DS21T06 for termination of a Wide SCSI bus.  
REFERENCE DOCUMENTS  
SCSI-2 (X3.131-1994)  
SCSI-3 Parallel Interface (X3T10/855D)  
SCSI-3 Fast–20 (X3T10/1071D)  
Available from: Global Engineering Documents  
15 Inverness Way East  
Englewood, CO 80112-5704  
Phone: (800) 854-7179,(303) 792-2181  
Fax: (303) 792-2192  
1 of 6  
112099  

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