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DS2490S+ PDF预览

DS2490S+

更新时间: 2024-11-09 06:54:39
品牌 Logo 应用领域
美信 - MAXIM 总线控制器微控制器和处理器外围集成电路光电二极管数据传输时钟
页数 文件大小 规格书
50页 1408K
描述
USB to 1-Wire Bridge Chip

DS2490S+ 技术参数

是否无铅:不含铅是否Rohs认证:符合
生命周期:Not Recommended零件包装代码:SOIC
包装说明:SOP, SOP16,.4针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.2
Is Samacsys:N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:e3长度:15.4 mm
湿度敏感等级:1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
封装等效代码:SOP16,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
电源:3.3,5 V认证状态:Not Qualified
座面最大高度:2.65 mm子类别:Bus Controllers
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:Matte Tin (Sn)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:30宽度:7.5 mm
uPs/uCs/外围集成电路类型:BUS CONTROLLER, UNIVERSAL SERIAL BUSBase Number Matches:1

DS2490S+ 数据手册

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19-4993; 10/09  
DS2490  
USB to 1-Wire Bridge Chip  
www.maxim-ic.com  
FEATURES  
PIN ASSIGNMENT  
. Communicates at regular and overdrive 1-  
Wire® speeds  
. Supports stiff 5V pullup for EEPROM,  
sensors, and crypto iButton®  
. Slew rate controlled 1-Wire timing and active  
pullup to accommodate long 1-Wire network  
lines and reduce radiation  
. Programmable 1-Wire timing and driver  
characteristics accommodate a wide range of  
1-Wire network configurations  
. Low- to high-level command types, including  
macros, for generating 1-Wire communication  
. Crystal oscillator timebase provides precision  
timed 1-Wire waveforms  
. High-speed 12Mbps Universal Serial Bus  
(USB) interface  
VD  
NC  
PMOD  
NC  
1
2
3
4
5
6
7
8
24  
23  
22  
21  
20  
19  
18  
17  
NC  
NC  
VB  
NC  
NC  
XO  
XI  
SUSO  
D-  
NC  
VD2  
NC  
NC  
D+  
NC  
1-WIRE  
16  
15  
14  
13  
9
10  
11  
12  
NC  
GND  
NC  
NC  
24-Pin SO  
Top View  
(300-mil)  
. Integrated USB-compliant transceiver  
. Supports USB remote wake-up from a 1-Wire  
device event to resume a suspended host  
system  
. 0oC to +70oC operating temperature range  
ORDERING INFORMATION  
TEMP  
PART NUMBER  
PIN-PACKAGE  
RANGE  
0oC to +70oC  
0oC to +70oC  
DS2490S+  
24 SO (300 mil)  
24 SO (300mil)  
DS2490S+T&R  
+ Denotes a lead(Pb)-free/RoHS-compliant package.  
T&R = Tape and reel.  
DESCRIPTION  
The DS2490 is a bridge chip that enables communication between a USB host system and a 1-Wire bus.  
It provides regular, overdrive, and flexible 1-Wire communication speeds and a full-speed 12Mbps  
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-Wire and iButton are registered trademarks of Maxim Integrated Products, Inc.  
1 of 50  

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