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DS2490 PDF预览

DS2490

更新时间: 2024-01-02 00:25:41
品牌 Logo 应用领域
达拉斯 - DALLAS /
页数 文件大小 规格书
50页 530K
描述
USB to 1-Wire Bridge Chip

DS2490 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:SOIC包装说明:0.300 INCH, SO-24
针数:24Reach Compliance Code:not_compliant
风险等级:5.71地址总线宽度:
最大时钟频率:12 MHz最大数据传输速率:1.5 MBps
外部数据总线宽度:JESD-30 代码:R-PDSO-G24
JESD-609代码:e0长度:15.4 mm
端子数量:24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封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):245
认证状态:Not Qualified座面最大高度:2.65 mm
最大供电电压:5.5 V最小供电电压:4.4 V
标称供电电压:5 V表面贴装:YES
技术:CMOS温度等级:COMMERCIAL
端子面层:Tin/Lead (Sn85Pb15)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 SPECIFIED宽度:7.5 mm
uPs/uCs/外围集成电路类型:BUS CONTROLLER, UNIVERSAL SERIAL BUSBase Number Matches:1

DS2490 数据手册

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PRELIMINARY  
DS2490  
USB to 1-WireTM Bridge Chip  
www.dalsemi.com  
FEATURES  
§ Communicates at regular and Overdrive 1-  
Wire speeds  
PIN ASSIGNMENT  
§ Supports 12V EPROM programming and stiff  
5V pullup for crypto iButton, sensors and  
EEPROM  
§ Slew rate controlled 1-Wire timing and active  
pullup to accommodate long lines and reduce  
radiation  
§ Programmable 1-Wire timing and driver  
characteristics accommodate a wide range of  
MicroLAN configurations at regular speed  
§ Smart 1-Wire protocol combines data and  
control information without requiring extra  
pins  
§ High-speed 12 Mbps USB interface  
§ Integrated USB-compliant transceiver  
§ Supports USB remote wakeup to resume a  
suspended host system  
16-Pin SOIC  
300-Mil  
ORDERING INFORMATION  
DS2490S  
16-Pin SOIC  
DESCRIPTION  
The DS2490 is a bridge chip that enables communication between the Universal Serial Bus (USB) and a  
1-Wire bus. It provides regular, overdrive and flexible 1-Wire communication speeds and a full-speed 12  
Mbps connection to USB. USB vendor-specific commands defined in this specification are used to  
control the DS2490 and communicate with attached 1-Wire devices. A functional block diagram of the  
DS2490 is shown in Figure 1.  
1 of 50  
033199  

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