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DS2127+T&R PDF预览

DS2127+T&R

更新时间: 2024-11-25 19:24:55
品牌 Logo 应用领域
美信 - MAXIM 信息通信管理接口集成电路
页数 文件大小 规格书
6页 161K
描述
14-LINE 110ohm SCSI BUS TERMINATOR, PQFP48, 7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MO-136BE, LQFP-48

DS2127+T&R 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:QFP包装说明:7 X 7 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, MO-136BE, LQFP-48
针数:48Reach Compliance Code:compliant
风险等级:5.69其他特性:SINGLE ENDED TERMINATION REQUIRES 5V SUPPLY
差分输出:YES接口集成电路类型:SCSI BUS TERMINATOR
JESD-30 代码:S-PQFP-G48JESD-609代码:e3
长度:7 mm湿度敏感等级:NOT APPLICABLE
功能数量:1信号线数量:14
端子数量:48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:LFQFP封装等效代码:QFP48,.35SQ,20
封装形状:SQUARE封装形式:FLATPACK, LOW PROFILE, FINE PITCH
峰值回流温度(摄氏度):260电源:3/5 V
标称上拉电阻:110 Ω认证状态:Not Qualified
座面最大高度:1.6 mm子类别:Bus Terminators
最大供电电压:5.5 V最小供电电压:2.7 V
标称供电电压:3.3 V表面贴装:YES
技术:BICMOS温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7 mm
Base Number Matches:1

DS2127+T&R 数据手册

 浏览型号DS2127+T&R的Datasheet PDF文件第2页浏览型号DS2127+T&R的Datasheet PDF文件第3页浏览型号DS2127+T&R的Datasheet PDF文件第4页浏览型号DS2127+T&R的Datasheet PDF文件第5页浏览型号DS2127+T&R的Datasheet PDF文件第6页 
Rev 2; 1/06  
Ultra3 LVD/SE SCSI 14-Line Terminator  
General Description  
Features  
The DS2127 Ultra3 LVD/SE SCSI terminator provides  
low-voltage differential (LVD)/single-ended (SE) termi-  
nations for 14 SCSI lines. Through the voltage on the  
DIFF_CAP pin, the device detects the types of drivers  
on the bus. If the device is connected in an LVD-only  
bus, the DS2127 provides LVD termination. If any sin-  
gle-ended devices are connected to the bus, the  
DS2127 uses SE termination. If any high-voltage differ-  
ential (HVD) devices are connected to the bus, the  
DS2127 isolates itself from the SCSI bus. The mode  
change has a built-in delay that is determined by an  
integrated SPI-3 mode change filter/delay. The termi-  
nating resistors can also be disconnected from the bus  
by asserting the ISO pin.  
Fully Compliant with Ultra2, Ultra3, Ultra160, and  
Ultra320 SCSI Standards  
Provides LVD/SE Termination for 14 Signal Pairs  
Auto-Selection of LVD or SE Termination  
5% Tolerance on SE and LVD Termination  
Resistance  
Low 3pF Power-Down Capacitance  
Built-In Mode-Change Filter/Delay  
For the LVD termination, the DS2127 provides 14 pre-  
cisely trimmed resistors. Each resistor is biased with  
two current sources to a fail-safe state. For SE termina-  
tion, the DS2127 provides 14 precision 110 resistors  
and one regulator for active-negation bias.  
On-Board Thermal-Shutdown Circuitry  
SCSI Bus Hot-Plug Compatible  
Fully Supports Actively Negated SE SCSI Signals  
Applications  
SCSI Array Backplane  
SCSI Cables  
Ordering Information  
VOLTAGE  
(V)  
TOP  
MARK**  
PART*  
DS2127  
PIN-PACKAGE  
Pin Configuration  
3.3  
3.3  
48 LQFP  
48 LQFP  
DS2127  
DS2127  
TOP VIEW  
DS2127+  
48 LQFP/Tape  
and Reel  
DS2127/T&R  
3.3  
3.3  
DS2127  
DS2127  
48 LQFP/Tape  
and Reel  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
48  
47  
46  
45  
44  
43  
42  
41  
40  
39  
38  
37  
R2P  
R2N  
R3P  
R3N  
R4P  
R4N  
R5P  
R5N  
R6P  
R6N  
R7P  
R7N  
R13N  
R13P  
R12N  
R12P  
R11N  
R11P  
R10N  
R10P  
R9N  
DS2127+T&R  
+Denotes a lead-free/RoHS-compliant package.  
*All devices rated over the 0°C to +70°C commercial tempera-  
ture range.  
**The top mark includes a "+" on lead-free packages.  
DS2127  
R9P  
R8N  
R8P  
LQFP  
______________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  

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