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UCC5639FQPTR PDF预览

UCC5639FQPTR

更新时间： 2024-09-20 03:14:31
品牌 Logo 应用领域
德州仪器 - TI 总线通信驱动程序和接口接口集成电路信息通信管理
页数 文件大小 规格书
6页 65K
描述
Multimode SCSI 15 Line Terminator with Reverse Disconnect

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中文翻译

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UCC5639FQPTR 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：QFP
包装说明：LFQFP, QFP48,.35SQ,20针数：48
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：1 week
风险等级：5.81Is Samacsys：N
差分输出：YES接口集成电路类型：SCSI BUS TERMINATOR
JESD-30 代码：S-PQFP-G48长度：7 mm
功能数量：1信号线数量：15
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）：NOT SPECIFIED电源：3.3 V
标称上拉电阻：105 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：5.25 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 mmBase Number Matches：1

UCC5639FQPTR 数据手册

 浏览型号UCC5639FQPTR的Datasheet PDF文件第2页浏览型号UCC5639FQPTR的Datasheet PDF文件第3页浏览型号UCC5639FQPTR的Datasheet PDF文件第4页浏览型号UCC5639FQPTR的Datasheet PDF文件第5页浏览型号UCC5639FQPTR的Datasheet PDF文件第6页 
UCC5639  
Multimode SCSI 15 Line Terminator with Reverse Disconnect  
DESCRIPTION  
FEATURES  
The UCC5639 Multimode SCSI Terminator provides a smooth transition  
into the next generation of the SCSI Parallel Interface (SPI-2). It automati-  
cally senses the bus, via DIFFB, and switches the termination to either sin-  
gle ended (SE) or low voltage differential (LVD) SCSI, dependent on which  
type of devices are connected to the bus. The UCC5639 can not be used  
on a HVD, EIA485, differential SCSI bus. If the UCC5639 detects a HVD  
SCSI device, it switches to a high impedance state.  
• Auto Selection Single Ended (SE) or  
Low Voltage Differential (LVD)  
Termination  
• Meets SCSI-1, SCSI-2, SCSI-3, SPI,  
Ultra (Fast-20), Ultra2 (SPI-2 LVD)  
and Ultra3 Standards  
• 2.7V to 5.25V Operation  
• Differential Failsafe Bias  
The Multimode terminator contains all functions required to terminate and  
auto detect and switch modes for SPI-2 bus architectures. Single Ended  
and Differential impedances and currents are trimmed for maximum effec-  
tiveness. Fail Safe biasing is provided to insure signal integrity. Device/Bus  
type detection circuitry is integrated into the terminator to provide automatic  
switching of termination between single ended and LVD SCSI and a high  
impedance for HVD SCSI. The multimode function provides all the perform-  
ance analog functions necessary to implement SPI-2 termination in a sin-  
gle monolithic device.  
• Thermal packaging for low junction  
temperature and better MTBF.  
The UCC5639 is offered in a 48 pin LQFP package for a temperature range  
of 0°C to 70°C.  
BLOCK DIAGRAM  
(NOISE LOAD)  
HIGH POWER  
2.05V  
DIFFB 34  
0.6V  
DIFFERENTIAL  
REF  
1.3V  
1.3V  
35 DIFFSENS  
LOW VOLTAGE  
DIFFERENTIAL  
–15mA ≤ I  
50µA ≤ I  
≤ –5mA  
SOURCE  
≤ 200µA  
SINGLE ENDED  
SINK  
110  
124  
REF  
2.7V  
SOURCE/SINK REGULATOR  
56mV  
52.5  
52.5  
–
+
REF  
1.25V  
12 L1–  
11 L1+  
56mV  
+
–
MODE  
SE  
ALL SWITCHES  
UP  
LVD  
DISCNCT  
DOWN  
OPEN  
SE GND SWITCH  
56mV  
110  
124  
DISCNCT  
TRMPWR  
36  
3
52.5  
52.5  
–
+
2
1
L15–  
L15+  
56mV  
+
–
SE GND SWITCH  
HS/GND  
4-9  
HS/GND  
28-33  
REG  
27  
10  
GND  
4.7µF .  
UDG-98110  
03/99  
123456

中文翻译

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