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DS2484
Single-Channel 1-Wire Master with Adjustable Timing and Sleep Mode
Best-in-Class Integrated 1-Wire Line Driver Facilitates Protocol Conversion Between I2C Host and 1-Wire Slave Network
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Key Features
Applications/Uses
Simplified Block Diagram
Technical Docs
| Data Sheet | Single-Channel 1-Wire Master with Adjustable Timing and Sleep Mode | Jul 23, 2015 | |
| App Note | Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact | ||
| App Note | Extending I2C Communication Distance with the DS28E17 | ||
| User Guide | MAXREFDES168# User Guide |
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Key Features
- I2C Host Interface Supports 100kHz and 400kHz I2C Communication Speeds
- Standard and Overdrive 1-Wire Communication Speeds
- Adjustable 1-Wire Timing for tRSTL, tMSP, tW0L, and tREC0
- 1-Wire Port Can Be Powered Down Under Software Control
- Supports Power-Saving Sleep Mode (SLPZ Pin), Where the 1-Wire Port is in High Impedance
- I2C Operating Voltages: 1.8V ±5%, 3.3V ±10%, and 5.0V +5/-10%
- Built-In Level Translator: 1-Wire Operating Voltage from 1.8V -5% to 5.0V +5%, Independent of I2C Voltage
- Built-In ESD Protection Level of ±8kV Human Body Model (HBM) Contact Discharge on IO Pin
- -40°C to +85°C Operating Temperature Range
- 8-Pin TDFN and 6-Pin SOT23 Packages
Applications/Uses
- Cell Phones
- Industrial Sensors
- Medical Instruments
- Printers
Description
The DS2484 is an I2C-to-1-Wire® bridge device that interfaces directly to standard (100kHz max) or fast (400kHz max) I2C masters to perform protocol conversion between the I2C master and any downstream 1-Wire slave devices. Relative to any attached 1-Wire slave device, the DS2484 is a 1-Wire master. Internal, user-adjustable timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and overdrive 1-Wire communication speeds. In addition, the 1-Wire bus can be powered down under software control. The dual-voltage operation allows different operating voltages on the I2C and 1-Wire side. Strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs and sensors. When not in use, the DS2484 can be put in sleep mode where power consumption is minimal.
Technical Docs
| Data Sheet | Single-Channel 1-Wire Master with Adjustable Timing and Sleep Mode | Jul 23, 2015 | |
| App Note | Add Control, Memory, Security, and Mixed-Signal Functions with a Single Contact | ||
| App Note | Extending I2C Communication Distance with the DS28E17 | ||
| User Guide | MAXREFDES168# User Guide |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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