Datasheet > DS2482-800_12

DS2482-800_12

更新时间： 2022-10-27 16:29:57

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
23页	388K
描述
8-Channel 1-Wire Master

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DS2482-800_12 数据手册

19-4932; Rev 4; 1/12

DS2482-800

8-Channel 1-Wire Master

GENERAL DESCRIPTION

FEATURES

I²C Host Interface, Supports 100kHz and 400kHz

I²C Communication Speeds

The DS2482-800 is an I²C-to-1-Wire^bridge device

that interfaces directly to standard (100kHz max) or

fast (400kHz max) I²C masters to perform

bidirectional protocol conversion between the I²C

master and any downstream 1-Wire slave devices.

Relative to any attached 1-Wire slave device, the

DS2482-800 is a 1-Wire master. Internal factory-

trimmed timers relieve the system host processor

from generating time-critical 1-Wire waveforms,

supporting both standard and Overdrive 1-Wire

communication speeds. To optimize 1-Wire

waveform generation, the DS2482-800 performs

slew-rate control on rising and falling 1-Wire edges

and has a programmable feature to mask the fast

presence pulse edge that some 1-Wire slave devices

can generate. Programmable strong pullup features

support 1-Wire power delivery to 1-Wire devices such

as EEPROMs and sensors. The DS2482-800

combines these features with eight independent

1-Wire I/O channels. The I²C slave address

assignment is controlled by three binary address

inputs, resolving potential conflicts with other I²C

slave devices in the system.

1-Wire Master I/O with Selectable Active or

Passive 1-Wire Pullup

Provides Reset/Presence, 8-Bit, Single-Bit, and

Three-Bit 1-Wire I/O Sequences

8 Channels of Independently Operated

1-Wire I/O

Standard and Overdrive 1-Wire Communication

Speeds

Slew Controlled 1-Wire Edges

Supports Low-Impedance 1-Wire Strong Pullup

for EEPROMs, Temp Sensors, or Other 1-Wire

Slaves That Have Momentary High Current

Modes

Three Address Inputs for I²C Address

Assignment

Wide Operating Range: 2.9V to 5.5V, -40°C to

+85°C

16-Pin SO Package (150 mils)

ORDERING INFORMATION

TEMP

PIN-

PART

RANGE

PACKAGE

DS2482S-800+

DS2482S-800+T&R

+Denotes a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

16 SO

-40 to +85C

APPLICATIONS

Wireless Base Stations

Central Office Switches

PBXs

Rack-Based Servers

Medical Clinical Diagnostic Equipment

PIN CONFIGURATION

IO3

SCL

SDA

V_CC

IO2

IO1

IO0

GND

IO4

IO5

IO6

IO7

TYPICAL OPERATING CIRCUIT

AD2

AD1

AD0

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

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