DS2482-800
8-Channel 1-Wire Master
GENERAL DESCRIPTION
BENEFITS AND FEATURES
•
Allows Easy Interface Between an I2C Micro Port
and a 1-Wire Slave
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.
o
o
o
o
o
o
I2C Host Interface Supports 100kHz and
400kHz I2C Communication Speeds
8 Channels of Independently Operated
1-Wire I/O
1-Wire Master I/O with Selectable Active or
Passive 1-Wire Pullup
Provides Reset/Presence, 8-Bit, Single-Bit,
and 3-Bit 1-Wire I/O Sequences
Standard and Overdrive 1-Wire
Communication Speeds
Three Address Inputs for I2C Address
Assignment
•
•
Minimizes Line Noise, Reducing System EMI
Slew-Controlled 1-Wire Edges
Supports EEPROMs, Temp Sensors, or Other
1-Wire Slaves That Have Momentary High Source
Current Modes
o
o
Strong 1-Wire Pullup Provided by an
Internal Low-Impedance Signal Path
PCTLZ Output to Optionally Control an
External MOSFET for Stronger Pullup
Requirements
o
•
•
Wide Operating Range: 2.9V to 5.5V, -40°C to
+85°C
16-Pin SO Package (150 mils)
APPLICATIONS
Wireless Base Stations
Central Office Switches
PBXs
Rack-Based Servers
Medical Clinical Diagnostic Equipment
ORDERING INFORMATION
TEMP
RANGE
PIN-
PACKAGE
PART
DS2482S-800+
DS2482S-800+T&R
16 SO
16 SO
-40 to +85°C
-40 to +85°C
TYPICAL OPERATING CIRCUIT
+Denotes a lead(Pb)-free/RoHS-compliant package.
T&R = Tape and reel.
PIN CONFIGURATION
IO3
SCL
SDA
VCC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IO2
IO1
IO0
GND
IO4
IO5
IO6
IO7
NC
AD2
AD1
AD0
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
19-4932; Rev 5; 12/14
5秒后页面跳转
一文带你了解压敏电阻器在直流电路中的过压保护作用
可控硅触发板选型指南
蓝白可调电位器的原理与使用特点解析
网络滤波器、EMI滤波器与EMC滤波器：分类关系与功能详解
微信公众号
抖音公众号
浙公网安备 33010502006866号 浙ICP备10014259号-119
营业执照ICP证
数据手册
如果您发现信息不准确，
