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DS2490S+TR

更新时间： 2024-01-03 16:16:22

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
50页	1408K
描述
USB to 1-Wire Bridge Chip

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技术参数
数据手册

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DS2490S+TR 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：	24	Reach 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 BUS	Base Number Matches：	1

DS2490S+TR 数据手册

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

PMOD

SUSO

D-

VD2

D+

1-WIRE

GND

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

. 0^oC to +70^oC operating temperature range

ORDERING INFORMATION

TEMP

PART NUMBER

PIN-PACKAGE

RANGE

0^oC to +70^oC

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.

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